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    Method and apparatus for securing wireless communications
    2.
    发明申请
    Method and apparatus for securing wireless communications 审中-公开
    用于确保无线通信的方法和装置

    公开(公告)号：US20070053325A1

    公开(公告)日：2007-03-08

    申请号：US11409668

    申请日：2006-04-24

    申请人： Sung-Hyuk Shin ,  Yogendra Shah ,  Prabhakar Chitrapu ,  Alain Briancon

    发明人： Sung-Hyuk Shin ,  Yogendra Shah ,  Prabhakar Chitrapu ,  Alain Briancon

    IPC分类号： H04B7/216

    CPC分类号： H04K1/00

    摘要： A method and apparatus for securing wireless communications are disclosed. A watermark message is encoded to watermark message symbols. A cover message is encoded to cover message symbols. The watermark message symbols are then overlaid onto the cover message symbols to generate a watermark-embedded cover message in a physical layer. The watermark message symbols have a substantially lower amplitude than the cover message symbols. Thus, the watermark message introduces small perturbation around the constellation points of the cover message symbols. The watermark message symbol may span or spread over a plurality of cover message symbols and may be encrypted with a secret key. The watermark message is used for improving receiver performance by transmitting additional information or for security enhancement purposes. The watermarking function may be selectively turned on and off.

    摘要翻译： 公开了一种用于确保无线通信的方法和装置。 水印消息被编码为水印消息符号。 封面信息被编码以覆盖消息符号。 然后将水印消息符号覆盖到封面消息符号上，以在物理层中生成嵌入水印的封面消息。 水印消息符号具有比覆盖消息符号大得多的幅度。 因此，水印消息在覆盖消息符号的星座点周围引入小的扰动。 水印消息符号可以覆盖多个封面消息符号并且可以用秘密密钥加密。 水印消息用于通过发送附加信息或为了安全增强目的来改善接收机性能。 可以选择性地打开和关闭水印功能。

    Method and system for securing wireless communications
    4.
    发明申请
    Method and system for securing wireless communications 审中-公开
    用于确保无线通信的方法和系统

    公开(公告)号：US20060133338A1

    公开(公告)日：2006-06-22

    申请号：US11283017

    申请日：2005-11-18

    申请人： Alexander Reznik ,  Alan Carlton ,  Alain Briancon ,  Yogendra Shah ,  Prabhakar Chitrapu ,  Rajat Mukherjee ,  Marian Rudolf

    发明人： Alexander Reznik ,  Alan Carlton ,  Alain Briancon ,  Yogendra Shah ,  Prabhakar Chitrapu ,  Rajat Mukherjee ,  Marian Rudolf

    IPC分类号： H04Q7/24

    CPC分类号： H04W12/08 ,  H04L27/3477 ,  H04L63/107 ,  H04W12/00503 ,  H04W12/02 ,  H04W12/12 ,  H04W16/30

    摘要： A method and system for securing wireless communications is disclosed. In one embodiment, different security policies are used based on the distance between a receiver and a transmitter, whereby data in the wireless communications can only be demodulated if received in particular trust zones. In another embodiment, a plurality of bit stream fragments are transmitted by a plurality of transmitters to a receiver located in an area where transmission patterns radiated by the transmitters intersect. Alternatively, the receiver performs a function on packet data units (PDUs) transmitted by the transmitters. In yet another embodiment, primary modulation points of a modulation constellation are split into clusters of proximate secondary modulation points which can be demodulated only by a receiver that is within range of the transmitter. In yet another embodiment, a main waveform is transmitted which overlays a QPSK signal with hierarchical modulation (HM) having encoded descrambling information.

    摘要翻译： 公开了一种用于确保无线通信的方法和系统。 在一个实施例中，基于接收机和发射机之间的距离使用不同的安全策略，由此无线通信中的数据只有在特定的信任区域中被接收时才能被解调。 在另一个实施例中，多个比特流片段由多个发射机发射到位于由发射机辐射的传输模式相交的区域中的接收机。 或者，接收机对发射机发送的分组数据单元（PDU）执行功能。 在另一个实施例中，调制星座的初级调制点被分成近似二次调制点的簇，其可以仅由位于发射机的范围内的接收机解调。 在另一个实施例中，发送主波形，其叠加具有编码解扰信息的分层调制（HM）的QPSK信号。

    METHOD AND SYSTEM FOR ENHANCING CRYPTOGRAPHIC CAPABILITIES OF A WIRELESS DEVICE USING BROADCASTED RANDOM NOISE
    6.
    发明申请
    METHOD AND SYSTEM FOR ENHANCING CRYPTOGRAPHIC CAPABILITIES OF A WIRELESS DEVICE USING BROADCASTED RANDOM NOISE 有权
    使用广播随机噪声增强无线设备的可视化能力的方法和系统

    公开(公告)号：US20080089518A1

    公开(公告)日：2008-04-17

    申请号：US11871683

    申请日：2007-10-12

    申请人： Alexander Reznik ,  Alain Briancon ,  Yevgeniy Dodis ,  Yogendra Shah ,  Chunxuan Ye ,  Robert DiFazio ,  Inhyok Cha

    发明人： Alexander Reznik ,  Alain Briancon ,  Yevgeniy Dodis ,  Yogendra Shah ,  Chunxuan Ye ,  Robert DiFazio ,  Inhyok Cha

    IPC分类号： H04L9/20

    CPC分类号： H04W12/04 ,  H04L9/065 ,  H04L9/0869 ,  H04L9/0875 ,  H04L63/0457 ,  H04L2209/08 ,  H04L2209/80 ,  H04W12/02

    摘要： A secret stream of bits begins by receiving a public random stream contained in a wireless communication signal at a transmit/receive unit. The public random stream is sampled and specific bits are extracted according to a shared common secret. These extracted bits are used to create a longer secret stream. The shared common secret may be generated using JRNSO techniques, or provided to the transmit/receive units prior to the communication session. Alternatively, one of the transmit/receive unit is assumed to be more powerful than any potential eavesdropper. In this situation, the powerful transmit/receive unit may broadcast and store a public random stream. The weaker transmit/receive unit selects select random bits of the broadcast for creating a key. The weaker transmit/receive unit sends the powerful transmit/receive unit the selected bit numbers, and powerful transmit/receive unit uses the random numbers to produce the key created by the weaker transmit/receive unit.

    摘要翻译： 秘密的比特流开始于在发送/接收单元处接收包含在无线通信信号中的公共随机流。 公共随机流被采样，并且根据共享的公共秘密提取特定位。 这些提取的比特用于创建更长的秘密流。 可以使用JRNSO技术生成共享公用秘密，或者在通信会话之前提供给发送/接收单元。 或者，假设发射/接收单元之一比任何潜在的窃听者更强大。 在这种情况下，强大的发送/接收单元可以广播和存储公共随机流。 较弱的发送/接收单元选择用于创建密钥的广播的选择随机比特。 较弱的发射/接收单元发送强大的发射/接收单元所选择的位号，强大的发射/接收单元使用随机数产生由较弱发射/接收单元产生的密钥。

    Generalized rake receiver for wireless communication
    8.
    发明授权
    Generalized rake receiver for wireless communication 失效
    广播耙式接收机，用于无线通信

    公开(公告)号：US07606295B2

    公开(公告)日：2009-10-20

    申请号：US11173046

    申请日：2005-07-01

    申请人： Babak Daneshrad ,  Christian Oberli ,  Jatin Bhatia ,  Yogendra Shah

    发明人： Babak Daneshrad ,  Christian Oberli ,  Jatin Bhatia ,  Yogendra Shah

    IPC分类号： H04B1/707

    CPC分类号： H04B1/7103 ,  H04B1/709 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/712 ,  H04B2201/70702 ,  H04B2201/709727

    摘要： The present invention is related to a generalized rake receiver for a wireless communication system. The rake receiver comprises a plurality of finger correlators and a plurality of escort correlators. Each finger correlator demodulates each multipath components of the transmitted signal. The escort correlator is used for multipath tracking for optimal finger placement and weight estimation for demodulation. The escort correlator is located in vicinity of multipath center and is programmable within a chip and at a resolution finer than a chip. Weight vector is estimated using the estimate of the total base station energy based upon the pilot information from the base stations in soft-handoff.

    摘要翻译： 本发明涉及一种用于无线通信系统的通用耙式接收机。 耙式接收机包括多个手指相关器和多个护送相关器。 每个手指相关器解调发射信号的每个多路径。 护送相关器用于多路径跟踪，用于最佳手指放置和用于解调的权重估计。 护航相关器位于多路径中心附近，可在芯片内编程，分辨率优于芯片。 基于来自基站的导频信息在软切换中使用基站总能量的估计来估计权重向量。

    METHOD AND SYSTEM FOR GENERATING A SECRET KEY FROM JOINT RANDOMNESS
    9.
    发明申请
    METHOD AND SYSTEM FOR GENERATING A SECRET KEY FROM JOINT RANDOMNESS 有权
    从联合随机产生秘密钥匙的方法和系统

    公开(公告)号：US20070165845A1

    公开(公告)日：2007-07-19

    申请号：US11612671

    申请日：2006-12-19

    申请人： Chunxuan Ye ,  Alexander Reznik ,  Yogendra Shah ,  Gregory Sternberg

    发明人： Chunxuan Ye ,  Alexander Reznik ,  Yogendra Shah ,  Gregory Sternberg

    IPC分类号： H04L9/30

    CPC分类号： H04L9/0875 ,  H04L25/0212 ,  H04L63/061 ,  H04L2209/80 ,  H04W12/04

    摘要： A method and system for generating a secret key from joint randomness shared by wireless transmit/receive units (WTRUs) are disclosed. A first WTRU and a second WTRU perform channel estimation to generate a sampled channel impulse response (CIR) on a channel between the first WTRU and the second WTRU. The first WTRU generates a set of bits from the sampled CIR and generates a secret key and a syndrome, (or parity bits), from the set of bits. The first WTRU sends the syndrome, (or parity bits), to the second WTRU. The second WTRU reconstructs the set of bits from the syndrome, (or parity bits), and its own sampled CIR, and generates the secret key from the reconstructed set of bits.

    摘要翻译： 公开了一种由无线发射/接收单元（WTRU）共享的联合随机生成秘密密钥的方法和系统。 第一WTRU和第二WTRU执行信道估计，以在第一WTRU和第二WTRU之间的信道上生成采样信道脉冲响应（CIR）。 第一WTRU从采样的CIR生成一组比特，并从该比特组生成秘密密钥和校正子（或奇偶校验位）。 第一WTRU将该校验子（或奇偶校验位）发送到第二WTRU。 第二WTRU从校验子（或奇偶校验位）重构比特组，并且自己采样CIR，并从重构的比特组生成秘密密钥。

    Wireless personal communicator and communication method
    10.
    发明授权
    Wireless personal communicator and communication method 有权
    无线个人通信和通信方式

    公开(公告)号：US06957069B2

    公开(公告)日：2005-10-18

    申请号：US10629148

    申请日：2003-07-29

    申请人： Yogendra Shah ,  Narayan Parappil Menon

    发明人： Yogendra Shah ,  Narayan Parappil Menon

    IPC分类号： H04L12/28 ,  H04L12/56 ,  H04W48/18 ,  H04Q7/20

    CPC分类号： H04W48/18 ,  H04W76/10 ,  H04W88/04 ,  H04W88/06

    摘要： A personal communicator in the form of a wireless transmit/receive unit (WTRU) can communicate in multiple modes to provide a user with seamless roaming, handover, and session continuity between multiple network or peer to peer communications. The WTRU has selectively operable transceiver components that are configured for wireless mobile network communications with mobile network base stations, wireless local network communications with local network base stations, and wireless peer to peer communications with other WTRUs. Various methods are provided utilizing the WTRU's multiple network communicating capabilities.

    摘要翻译： 无线发射/接收单元（WTRU）形式的个人通信器可以以多种模式进行通信，以向用户提供多个网络或对等通信之间的无缝漫游，切换和会话连续性。 WTRU具有选择性地操作的收发器组件，其被配置用于与移动网络基站的无线移动网络通信，与本地网络基站的无线本地网络通信以及与其他WTRU的无线对等通信。 利用WTRU的多个网络通信能力提供各种方法。