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211 条记录 (耗时 0.045 秒)

    Beacon coding in wireless communications systems
    94.
    发明授权
    Beacon coding in wireless communications systems 有权
    无线通信系统中的信标编码

    公开(公告)号：US09178732B2

    公开(公告)日：2015-11-03

    申请号：US12446728

    申请日：2007-10-26

    申请人： Thomas Richardson ,  Husheng Li ,  Junyi Li ,  Alexander Leonidov ,  Rajiv Laroia ,  Ravi Palanki ,  Gavin Horn ,  Ashwin Sampath

    发明人： Thomas Richardson ,  Husheng Li ,  Junyi Li ,  Alexander Leonidov ,  Rajiv Laroia ,  Ravi Palanki ,  Gavin Horn ,  Ashwin Sampath

    IPC分类号： H04W72/04 ,  H04J3/00 ,  H04L27/10 ,  H04L1/00 ,  H04L5/00

    CPC分类号： H04L27/10 ,  H04L1/0045 ,  H04L5/0053 ,  H04L5/0091

    摘要： Systems and methodologies are described that facilitate transmitting beacon symbols of a beacon message such that a sequence of symbols can satisfy a linear constraint over a field where the field elements can be identified with carriers. In this regard, a coding scheme can be applied to a beacon message; the coding scheme can produce a plurality of beacon symbols to transmit on given subcarriers. A receiving device of the beacon symbols can decode a beacon message by receiving less than the total number of symbols in a beacon message and determining the remaining symbol subcarriers based on the linear constraint. Thus, more efficient decoding of beacons is facilitated as well as resolving beacon ambiguity by figuring out which symbols satisfy linear constraints for the symbols, and resolving time and frequency shift by detecting an offset that would result in satisfaction of the linear constraint.

    摘要翻译： 描述了促进发送信标消息的信标符号的系统和方法，使得符号序列可以满足可以用载波识别场元素的场的线性约束。 在这方面，编码方案可以应用于信标消息; 编码方案可以产生多个信标符号，以在给定子载波上进行传输。 信标符号的接收设备可以通过接收小于信标消息中的总符号数来解码信标消息，并且基于线性约束确定剩余的符号子载波。 因此，有助于信标的更有效的解码以及通过找出哪些符号满足符号的线性约束来解析信标模糊度，以及通过检测将导致满足线性约束的偏移来解决时间和频率偏移。

    Spectrum authorization and related communications methods and apparatus
    96.
    发明授权
    Spectrum authorization and related communications methods and apparatus 有权
    频谱授权和相关的通信方法和设备

    公开(公告)号：US08848914B2

    公开(公告)日：2014-09-30

    申请号：US12272988

    申请日：2008-11-18

    申请人： Vincent D. Park ,  Thomas Richardson ,  Michaela Vanderveen ,  Junyi Li ,  M. Scott Corson

    发明人： Vincent D. Park ,  Thomas Richardson ,  Michaela Vanderveen ,  Junyi Li ,  M. Scott Corson

    IPC分类号： G06F21/10 ,  H04L29/06 ,  H04L29/08 ,  H04N21/63 ,  H04L9/00 ,  H04B1/707 ,  H04K1/00 ,  H04N21/835

    CPC分类号： H04L63/0428 ,  G06F21/10 ,  G06F21/105 ,  H04B1/707 ,  H04K1/00 ,  H04L9/00 ,  H04L29/08306 ,  H04L63/062 ,  H04L63/162 ,  H04L69/24 ,  H04N21/63 ,  H04N21/835

    摘要： Various embodiments relate to wireless communications, and more particularly, to methods and apparatus for authorizing use of spectrum, e.g., through the issuance of spectrum access keys, and/or preventing or discouraging the unauthorized use of licensed spectrum. Peer to peer wireless communications between authorized users of licensed spectrum may involve scrambling/descrambling of information communicated between authorized devices. In some embodiments air interface timing and/or other information received from a second device, e.g., a beacon or GPS transmitter, is incorporated into a computation of a pseudo-random bit sequence which is also computed based on a spectrum access key communicated to authorized spectrum users. In some embodiments authorized peer to peer devices scramble communicated information based on the generated pseudo random bit sequence thereby preventing or discouraging communication with devices which are not authorized to use the spectrum and lack a spectrum access key used to generate the pseudo random bit sequence.

    摘要翻译： 各种实施例涉及无线通信，更具体地，涉及用于授权使用频谱的方法和装置，例如通过发布频谱接入密钥，和/或防止或阻止未授权使用许可频谱。 许可频谱的授权用户之间的对等无线通信可能涉及在授权设备之间传送的信息的加扰/解扰。 在一些实施例中，从第二设备（例如，信标或GPS发射机）接收的空中接口定时和/或其他信息被并入到伪随机比特序列的计算中，所述伪随机比特序列也是基于传送给授权的频谱接入密钥 频谱用户。 在一些实施例中，授权的对等设备基于生成的伪随机比特序列来加密传送的信息，从而防止或阻止与未被授权使用频谱的设备的通信，并且缺少用于生成伪随机比特序列的频谱接入密钥。

    Methods and apparatus for mobile device location determination
    97.
    发明授权
    Methods and apparatus for mobile device location determination 失效
    移动设备位置确定的方法和装置

    公开(公告)号：US08781496B2

    公开(公告)日：2014-07-15

    申请号：US13008959

    申请日：2011-01-19

    申请人： Thomas Richardson ,  Aleksandar Jovicic ,  Cyril Measson ,  Junyi Li

    发明人： Thomas Richardson ,  Aleksandar Jovicic ,  Cyril Measson ,  Junyi Li

    IPC分类号： H04W24/00 ,  H04W64/00 ,  H04W4/02 ,  H04W24/10

    CPC分类号： H04W64/00 ,  G01S5/0236 ,  H04M2242/30 ,  H04W4/023 ,  H04W4/027 ,  H04W4/029 ,  H04W24/10

    摘要： Methods and apparatus for resolving an ambiguity with regard to a mobile device's location are described. In various embodiments, when a level of ambiguity with regard to the location of a mobile device is detected, and the level of ambiguity is above a threshold, an ambiguity resolution request signal is generated and transmitted. In this manner, a wireless terminal needing help in determining its location reliably may request such help but at other times may determine its own location without assistance. In some embodiments the ambiguity resolution request signal includes information, e.g., location probabilities, on one or more locations which are under consideration as possible locations of the mobile device. A device responding to the ambiguity resolution request provides information allowing the mobile device confronted with a location ambiguity to eliminate at least on location under consideration or to generate a new probability for one or more locations under consideration.

    摘要翻译： 描述了用于解决关于移动设备位置的模糊性的方法和装置。 在各种实施例中，当检测到关于移动设备的位置的模糊度级别，并且歧义级别高于阈值时，生成并发送模糊度解析请求信号。 以这种方式，需要帮助确定其位置的无线终端可以请求这样的帮助，但是在其他时候可以在没有帮助的情况下确定其自己的位置。 在一些实施例中，模糊度解析请求信号包括作为移动设备的可能位置正在考虑的一个或多个位置上的信息，例如位置概率。 响应于模糊度解析请求的设备提供信息，允许面临位置模糊的移动设备至少消除所考虑的位置，或为一个或多个所考虑的位置产生新的概率。

    MITIGATING INTERFERENCE IN A COMMUNICATION NETWORK
    99.
    发明申请
    MITIGATING INTERFERENCE IN A COMMUNICATION NETWORK 有权
    在通信网络中减少干扰

    公开(公告)号：US20120263249A1

    公开(公告)日：2012-10-18

    申请号：US13532477

    申请日：2012-06-25

    申请人： Junyi Li ,  Saurabha Tavildar ,  Rajiv Laroia ,  Thomas Richardson

    发明人： Junyi Li ,  Saurabha Tavildar ,  Rajiv Laroia ,  Thomas Richardson

    IPC分类号： H04B15/00 ,  H04L27/00 ,  H04L27/28

    CPC分类号： H04L1/0045 ,  H04L1/20 ,  H04L1/201 ,  H04L5/0007 ,  H04L5/0033 ,  H04L5/0058

    摘要： Aspects relate to mitigating interference in a communication network that does not employ a centralized scheduler. A transmission sent on a subset of resources is evaluated to determine a number of communication pairs that have selected that subset of resources on which to transmit. If there are a large number of communication pairs transmitting on that subset, the transmission is ignored by a receiving device. The number of degrees of freedom that contain energy on the subset is evaluated to determine if an expected number of degrees of freedom that should have energy is met or exceeded. If the expected threshold number is met or exceed, the transmission is decoded by the receiving device, else the transmission is not decoded.

    摘要翻译： 方面涉及减轻不采用集中式调度器的通信网络中的干扰。 对资源子集发送的传输进行评估，以确定已经选择要发送的资源子集的多个通信对。 如果在该子集上有大量的通信对传输，则传输被接收设备忽略。 评估在子集上含有能量的自由度的数量，以确定是否满足或超过应具有能量的预期自由度数。 如果满足或超过预期阈值数，则传输由接收​​设备解码，否则传输不被解码。

    Methods and apparatus for improved utilization of air link resources in a wireless communications system
    100.
    发明授权
    Methods and apparatus for improved utilization of air link resources in a wireless communications system 有权
    一种改善无线通信系统空中链路资源利用率的方法和装置

    公开(公告)号：US08213538B2

    公开(公告)日：2012-07-03

    申请号：US11945720

    申请日：2007-11-27

    申请人： Thomas Richardson ,  Hui Jin ,  Rajiv Laroia ,  Junyi Li

    发明人： Thomas Richardson ,  Hui Jin ,  Rajiv Laroia ,  Junyi Li

    IPC分类号： H04L27/04

    CPC分类号： H04L5/023 ,  H04B1/713 ,  H04B7/068 ,  H04B7/0691 ,  H04L1/06 ,  H04L25/0202 ,  H04L25/4902 ,  H04L27/2604 ,  H04W52/28 ,  H04W52/325

    摘要： Methods and apparatus for improving the utilization of air link resources in a wireless communications system, e.g., an OFDM MIMO system, including a base station with multiple transmit antennas are described. Superposition signaling in the downlink is employed. The superimposed signal includes a first transform result signal and a second lower power signal. The first transform result signal is generated from a first signal, which uses position modulation, e.g., including null components and high power non-null components. Different components of the first transform result signal are directed to different transmit antennas. The first transform result signal communicates information to a first wireless terminal, e.g., a weak receiver. The non-null received elements of the first transform result signal are utilized by a second wireless terminal, e.g., a superior receiver, as pilots to determine a channel estimate. The second wireless terminal uses the determined channel estimate to demodulate received second signals.

    摘要翻译： 描述了在包括具有多个发射天线的基站的无线通信系统（例如OFDM MIMO系统）中改善空中链路资源的利用的方法和装置。 采用下行链路中的叠加信令。 叠加信号包括第一变换结果信号和第二较低功率信号。 第一变换结果信号从使用位置调制的第一信号产生，例如包括零分量和高功率非零分量。 第一变换结果信号的不同组件被引导到不同的发射天线。 第一变换结果信号将信息传送到第一无线终端，例如弱接收机。 第一变换结果信号的非零接收元件由第二无线终端（例如，上级接收机）用作导频以确定信道估计。 第二无线终端使用确定的信道估计来解调所接收的第二信号。