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    Method and System for User Equipment Location Determination on a Wireless Transmission System
    112.
    发明申请
    Method and System for User Equipment Location Determination on a Wireless Transmission System 有权
    无线传输系统用户设备位置确定方法与系统

    公开(公告)号：US20170074971A1

    公开(公告)日：2017-03-16

    申请号：US15241601

    申请日：2016-08-19

    Applicant: Apple Inc.

    Inventor： Lai King Tee ,  Geng Wu ,  Jun Li ,  Yuqiang Tang ,  Neng Wang ,  Hua Xu ,  Jianglei Ma

    IPC: G01S5/10 ,  H04W64/00 ,  H04W24/10 ,  H04W4/02

    CPC classification number: G01S5/10 ,  H04L5/0007 ,  H04W4/02 ,  H04W24/10 ,  H04W64/00

    Abstract: Neighbor cell hearability can be improved by including an additional reference signal that can be detected at a low sensitivity and a low signal-to-noise ratio, by introducing non-unity frequency reuse for the signals used for a time difference of arrival (TDOA) measurement, e.g., orthogonality of signals transmitted from the serving cell sites and the various neighbor cell sites. The new reference signal, called the TDOA-RS, is proposed to improve the hearability of neighbor cells in a cellular network that deploys 3GPP EUTRAN (LTE) system, and the TDOA-RS can be transmitted in any resource blocks (RB) for PDSCH and/or MBSFN subframe, regardless of whether the latter is on a carrier supporting both PMCH and PDSCH or not. Besides the additional TDOA-RS reference signal, an additional synchronization signal (TDOA-sync) may also be included to improve the hearability of neighbor cells.

    Abstract translation: 通过对于用于到达时差（TDOA）的信号引入非单位频率重用，可以通过包括可以在低灵敏度和低信噪比下检测的附加参考信号来提高邻近小区的可听性， 测量，例如从服务小区站点和各个相邻小区站点发送的信号的正交性。 提出了称为TDOA-RS的新参考信号，以提高部署3GPP EUTRAN（LTE）系统的蜂窝网络中的相邻小区的可听性，并且可以在用于PDSCH的任何资源块（RB）中发送TDOA-RS 和/或MBSFN子帧，而不管后者是否在支持PMCH和PDSCH两者的载波上。 除了附加的TDOA-RS参考信号之外，还可以包括附加同步信号（TDOA-sync）以提高相邻小区的可听性。

    Pilot Symbol Patterns for Transmission via a Plurality of Antennas
    113.
    发明申请
    Pilot Symbol Patterns for Transmission via a Plurality of Antennas 审中-公开
    通过多个天线传输的先导符号模式

    公开(公告)号：US20160359652A1

    公开(公告)日：2016-12-08

    申请号：US15226101

    申请日：2016-08-02

    Applicant: Apple Inc.

    Inventor： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hang Zhang ,  Hua Xu ,  Dong-Sheng Yu

    IPC: H04L27/26 ,  H04L25/02 ,  H04L5/00 ,  H04B7/06 ,  H04B7/08

    CPC classification number: H04L27/2611 ,  H04B7/06 ,  H04B7/08 ,  H04L5/0007 ,  H04L5/0023 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/2626 ,  H04L27/2647

    Abstract: A method and apparatus for improving channel estimation within an OFDM communication system. Channel estimation in OFDM is usually performed with the aid of pilot symbols. The pilot symbols are typically spaced in time and frequency. The set of frequencies and times at which pilot symbols are inserted is referred to as a pilot pattern. In some cases, the pilot pattern is a diagonal-shaped lattice, either regular or irregular. The method first interpolates in the direction of larger coherence (time or frequency). Using these measurements, the density of pilot symbols in the direction of faster change will be increased thereby improving channel estimation without increasing overhead. As such, the results of the first interpolating step can then be used to assist the interpolation in the dimension of smaller coherence (time or frequency).

    Abstract translation: 一种用于改善OFDM通信系统内的信道估计的方法和装置。 OFDM中的信道估计通常借助于导频符号来执行。 导频符号通常在时间和频率上间隔开。 将导频符号插入的频率和时间的集合称为导频模式。 在一些情况下，导频图案是对角线形格子，规则的或不规则的。 该方法首先在较大相干性（时间或频率）的方向内插。 使用这些测量，导频符号在更快变化方向上的密度将增加，从而改善信道估计而不增加开销。 因此，第一内插步骤的结果然后可以用于辅助尺寸较小的相干性（时间或频率）的内插。

    Uplink Control in a Wireless Communication Network
    117.
    发明申请
    Uplink Control in a Wireless Communication Network 审中-公开
    无线通信网络中的上行链路控制

    公开(公告)号：US20160183257A1

    公开(公告)日：2016-06-23

    申请号：US15055793

    申请日：2016-02-29

    Applicant: Apple Inc.

    Inventor： Sophie Vrzic ,  Jun Yuan ,  Mo-Han Fong ,  Robert Novak ,  Dong-Sheng Yu ,  Jianglei Ma

    IPC: H04W72/04 ,  H04J11/00 ,  H04L5/00

    CPC classification number: H04W72/0446 ,  H04J11/00 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0055 ,  H04L27/2602 ,  H04W72/0413 ,  H04W72/042 ,  H04W74/004 ,  H04W74/0833 ,  H04W74/0866 ,  H04W84/12 ,  H04W88/085 ,  H04W88/12

    Abstract: A method and system are provided having an uplink control structure and a pilot signal having minimal signal overhead for providing channel estimation and data demodulation in a wireless communication network. The uplink control structures enable mobile terminals to communicate with corresponding base stations to perform various functions including obtaining initial system access, submitting a bandwidth request, triggering a continuation of negotiated service, or providing a proposed allocation re-configuration header. A dedicated random access channel is provided to communicatively couple the base station and the mobile terminal so that the mobile terminal can select a random access signaling identification. A resource request is received at the base station to uplink resource information from the mobile terminal and an initial access information request is received from the mobile terminal to configure the base station connection. Pilot signals with varying density configurations are provided to include low density symbol patterns for multiple contiguous resource blocks and high density symbol patterns for single resource blocks.

    Abstract translation: 提供一种方法和系统，其具有上行链路控制结构和具有最小信号开销的导频信号，用于在无线通信网络中提供信道估计和数据解调。 上行链路控制结构使得移动终端能够与相应的基站进行通信，以执行各种功能，包括获得初始系统访问，提交带宽请求，触发协商服务的继续或提供建议的分配重配置报头。 提供专用随机接入信道以通信地耦合基站和移动终端，使得移动终端可以选择随机接入信令标识。 在基站接收资源请求以从移动终端上行资源信息，并且从移动终端接收初始访问信息请求以配置基站连接。 提供具有不同密度配置的导频信号以包括用于多个连续资源块的低密度符号模式和用于单个资源块的高密度符号模式。

    Communication Systems and Methods
    119.
    发明申请
    Communication Systems and Methods 审中-公开
    通信系统与方法

    公开(公告)号：US20150295632A1

    公开(公告)日：2015-10-15

    申请号：US14746972

    申请日：2015-06-23

    Applicant: Apple Inc.

    Inventor： Hua Xu ,  Jianglei Ma ,  Ming Jia

    IPC: H04B7/06 ,  H04W72/12 ,  H04W52/42 ,  H04L5/00 ,  H04L1/06 ,  H04L1/18

    CPC classification number: H04B7/0669 ,  H04L1/0073 ,  H04L1/0668 ,  H04L1/1607 ,  H04L1/1861 ,  H04L5/0055 ,  H04W52/42 ,  H04W72/1263 ,  H04W72/1278

    Abstract: In accordance with embodiments, a communication system includes a first device and a second device in communication with the first device. The second device has at least a first pair and a second pair of antennas. The second device spreads a communication bit by a predetermined spreading factor and forms a first set of spatial block codes in frequency domain based on the spread communication bit. The first set of spatial block codes being consecutively transmitted on one of the first and second pairs of antennas.

    Abstract translation: 根据实施例，通信系统包括与第一设备通信的第一设备和第二设备。 第二装置具有至少第一对和第二对天线。 第二设备以预定的扩展因子扩展通信位，并且基于扩展通信位在频域中形成第一组空间块码。 第一组空间块码在第一和第二对天线之一上连续发射。

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