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    Feedback Based on Codebook Subset
    61.
    发明申请
    Feedback Based on Codebook Subset 审中-公开

    公开(公告)号：US20200091973A1

    公开(公告)日：2020-03-19

    申请号：US16690905

    申请日：2019-11-21

    Applicant: Apple Inc.

    Inventor： Lai King Tee ,  Yi Song ,  Neng Wang

    IPC: H04B7/0456 ,  H04B7/06 ,  H04L25/03

    Abstract: The present invention provides for an improved application of signal strength weightings in a SDMA sectorized cellular network. The improved signal strength weightings application is conducted through the improved selection of weightings from a new codebook subset or by the selection of weightings from a larger codebook subset. In a further embodiment, an antenna beam index or bit map can be used to select the best beam(s) in a SDMA sectorized cellular network. In another embodiment, a field or factor in an uplink or downlink transmission packet can designate which directional transmission beam is best suited for the transmission or when the directional transmission beam should be activated.

    Method and System for User Equipment Location Determination on a Wireless Transmission System
    62.
    发明申请
    Method and System for User Equipment Location Determination on a Wireless Transmission System 审中-公开

    公开(公告)号：US20190342847A1

    公开(公告)日：2019-11-07

    申请号：US16438652

    申请日：2019-06-12

    Applicant: Apple Inc.

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

    IPC: H04W56/00 ,  H04L5/00 ,  H04W72/00 ,  H04W4/06 ,  H04W72/04 ,  H04B1/713

    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.

    Method and system for user equipment location determination on a wireless transmission system
    63.
    发明授权
    Method and system for user equipment location determination on a wireless transmission system 有权

    公开(公告)号：US10330771B2

    公开(公告)日：2019-06-25

    申请号：US16136862

    申请日：2018-09-20

    Applicant: Apple Inc.

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

    IPC: G01S5/10 ,  H04W64/00 ,  H04W4/02 ,  H04W24/10 ,  H04L5/00

    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.

    Providing acknowledgement information by a wireless device
    66.
    发明授权
    Providing acknowledgement information by a wireless device 有权
    通过无线设备提供确认信息

    公开(公告)号：US09571233B2

    公开(公告)日：2017-02-14

    申请号：US14883800

    申请日：2015-10-15

    Applicant: Apple Inc.

    Inventor： Jun Li ,  Lai King Tee

    IPC: H04L1/16 ,  H04L1/18 ,  H04W72/04 ,  H04L5/00 ,  H04W28/04

    CPC classification number: H04L1/1635 ,  H04L1/1858 ,  H04W28/04 ,  H04W72/0406

    Abstract: In general, to provide acknowledgment information by a first wireless device, the first wireless device sends repeated instances of acknowledgment information in respective first and second frame structures, in response to receipt of first information from a second wireless device. In addition, the first wireless device also sends further acknowledgment information in the second frame structure that is responsive to second information received from the second wireless device.

    Abstract translation: 通常，为了通过第一无线设备提供确认信息，响应于从第二无线设备接收到第一信息，第一无线设备在相应的第一和第二帧结构中发送确认信息的重复实例。 此外，第一无线设备还在响应于从第二无线设备接收的第二信息的第二帧结构中发送另外的确认信息。

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