PRESENCE SENSOR WITH ULTRASOUND AND RADIO
    13.
    发明申请
    PRESENCE SENSOR WITH ULTRASOUND AND RADIO 审中-公开
    存在超声波和无线电的传感器

    公开(公告)号:US20130163453A1

    公开(公告)日:2013-06-27

    申请号:US13338041

    申请日:2011-12-27

    IPC分类号: H04L12/26

    摘要: An ultrasound and radio frequency technology is used to implement presence sensor capability for wireless devices such as, a laptap device. For example, the laptap device connects to a station device through a WiFi signal. In this example, the WiFi signal may include a data packet that synchronizes internal clocks of the laptap device with the station device. Further, the data packet may include transmitting time information for an ultrasound audio signal generated by the station device. The ultrasound audio signal is received by the laptap device that calculates time of flight (TOF) of the ultrasound audio signal. The TOF may be used to determine actual distance of the wireless device (e.g., laptap device) to the station device.

    摘要翻译: 使用超声波和射频技术来实现诸如laptap设备之类的无线设备的存在传感器能力。 例如,笔记本设备通过WiFi信号连接到站设备。 在该示例中,WiFi信号可以包括数据分组,该数据分组使该分路器装置的内部时钟与站装置同步。 此外,数据分组可以包括发送由站设备生成的超声音频信号的时间信息。 超声波音频信号由计算出超声音频信号的飞行时间(TOF)的笔记本装置接收。 可以使用TOF来确定无线设备(例如,laptap设备)到站设备的实际距离。

    Apparatus and method for transmitting fast feedback data in wireless systems
    15.
    发明授权
    Apparatus and method for transmitting fast feedback data in wireless systems 失效
    用于在无线系统中传输快速反馈数据的装置和方法

    公开(公告)号:US08462713B2

    公开(公告)日:2013-06-11

    申请号:US12658337

    申请日:2010-02-08

    IPC分类号: H04W4/00

    摘要: Embodiments of the present invention may help facilitate improved performance for high throughput, mobile wireless networks, e.g., IEEE 802.16m, mobile implementations for 3GPP Long Term Evolution (LTE) including LTE advanced mobile phone networks, and other types of high bandwidth networks. In some embodiments, provided are orthogonal sequences with desirable correlation properties for, e.g., 4-6 bits of information, among other things, typically achieving improved performance at varied vehicle speeds. In some embodiments, correlation distances for 6 bits may be less than 3.86, for 5 bits may be less than 3.12, and for 4 bits may be less than 1.95. Additionally, in some embodiments, dedicated coding for PFBCH information may be provided to achieve improved performance for most (if not all) information bits at a relatively wide range of vehicle speeds. Different code sequences for different tiles in one PFBCH channel may be applied for same messages to overcome error floors in high speed scenarios.

    摘要翻译: 本发明的实施例可以帮助促进针对高吞吐量的移动无线网络(例如IEEE 802.16m,用于包括LTE高级移动电话网络的3GPP长期演进(LTE))的移动实现以及其他类型的高带宽网络的改进的性能。 在一些实施例中,所提供的是具有例如4-6位信息的期望相关特性的正交序列,其中通常在变化的车辆速度下实现改进的性能。 在一些实施例中,6位的相关距离可以小于3.86,因为5位可能小于3.12,对于4位可能小于1.95。 另外,在一些实施例中,可以提供用于PFBCH信息的专用编码,以在相对较宽的车速范围内为大多数(如果不是全部)信息比特实现改进的性能。 一个PFBCH信道中的不同瓦片的不同码序列可以应用于相同的消息以克服高速场景中的错误帧。

    Unified closed loop SU/MU-MIMO signaling and codebook design
    17.
    发明授权
    Unified closed loop SU/MU-MIMO signaling and codebook design 有权
    统一闭环SU / MU-MIMO信令和码本设计

    公开(公告)号:US08254486B2

    公开(公告)日:2012-08-28

    申请号:US11904867

    申请日:2007-09-28

    IPC分类号: H04B7/04

    摘要: A multi-resolution codebook is used to provide quantization for channel related information in a wireless network that supports both single-user MIMO and multi-user MIMO. The multi-resolution codebook may include a higher resolution “fine” codebook for use with MU-MIMO subscriber stations and a lower resolution “coarse” codebook for use with SU-MIMO subscriber stations. A tracking codebook may also be used to provide quantization for updates to channel related information. In at least one embodiment, the tracking codebook includes a number of unit vectors (or orthogonal matrices) disposed upon a sphere cap.

    摘要翻译: 多分辨率码本用于在支持单用户MIMO和多用户MIMO的无线网络中提供信道相关信息的量化。 多分辨率码本可以包括与MU-MIMO用户站一起使用的更高分辨率的“精细”码本和与SU-MIMO用户站一起使用的较低分辨率的“粗略”码本。 跟踪码本还可用于提供用于信道相关信息更新的量化。 在至少一个实施例中,跟踪码本包括设置在球帽上的多个单位向量(或正交矩阵)。

    Recursive reduction of channel state feedback
    18.
    发明授权
    Recursive reduction of channel state feedback 有权
    通道状态反馈递归减少

    公开(公告)号:US08254359B2

    公开(公告)日:2012-08-28

    申请号:US12004923

    申请日:2007-12-21

    IPC分类号: H04B7/216

    摘要: A method and a system that multiplies a beamforming matrix by a unitary matrix that does not change the subspace of the beamforming matrix for form a converted matrix having a lower left triangle of zeros. A first column vector having a fewest number of elements of the converted matrix is quantized using a codebook and represented by a first codebook index. A Householder matrix is determined from the quantized first column vector and the converted matrix is multiplied by the Householder matrix. Quantizing, determining a Householder matrix from further column vectors of the converted matrix using a codebook and representing each respective column vector by further corresponding codebook index, and multiplying the converted matrix on the left by the determined Householder matrix for each respective column vector are recursively repeated. The first codebook index and further codebook indices are transmitted to a remote station for use in beamforming.

    摘要翻译: 一种方法和系统,其将波束形成矩阵乘以不改变波束形成矩阵的子空间的单一矩阵,以形成具有零的左下三角形的转换矩阵。 具有转换矩阵的元素数目最少的第一列矢量使用码本量化,并由第一码本索引表示。 从量化的第一列向量确定一个Householder矩阵,并将该矩阵乘以Householder矩阵。 使用码本从转换矩阵的其他列向量中量化,确定房主矩阵,并通过进一步的相应码本索引表示每个相应的列向量,并且将每个相应列向量的左侧的转换矩阵乘以所确定的所有矩阵,递归地重复 。 第一码本索引和其他码本索引被发送到远程站以用于波束成形。

    CABLE ANTENNA APPARATUS AND SYSTEM
    19.
    发明申请
    CABLE ANTENNA APPARATUS AND SYSTEM 有权
    电缆天线装置和系统

    公开(公告)号:US20120133565A1

    公开(公告)日:2012-05-31

    申请号:US12957208

    申请日:2010-11-30

    IPC分类号: H01Q13/08

    CPC分类号: H01Q1/2266 H01Q13/203

    摘要: Embodiments of an apparatus and system are described for a coaxial antenna. An apparatus may comprise, for example, an integrated circuit and a coaxial cable coupled to the integrated circuit and arranged to operate as an antenna, the coaxial cable comprising an inner conductor layer and at least one insulator layer, wherein one or more portions of the inner conductor layer are exposed to allow the exposed inner conductor layer to operate as a radiating element for the antenna. Other embodiments are described and claimed.

    摘要翻译: 对于同轴天线描述了装置和系统的实施例。 装置可以包括例如集成电路和耦合到集成电路并被布置为作为天线操作的同轴电缆,所述同轴电缆包括内部导体层和至少一个绝缘体层,其中,所述一个或多个部分 内导体层被暴露以允许暴露的内导体层作为天线的辐射元件工作。 描述和要求保护其他实施例。