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    Preambles in OFDMA system
    82.
    发明授权
    Preambles in OFDMA system 有权

    公开(公告)号：US10212017B2

    公开(公告)日：2019-02-19

    申请号：US15823072

    申请日：2017-11-27

    Applicant: APPLE INC.

    Inventor： Jianglei Ma ,  Hang Zhang ,  Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Mo-Han Fong

    IPC: H04L27/26 ,  H04B7/02 ,  H04L5/00 ,  H04W24/02 ,  H04B7/0452 ,  H04L7/04

    Abstract: The present invention provides a preamble that is inserted into an OFDMA frame and has a common sequence for all the base stations participating in a transmission. The subscriber station performs fine synchronization using the common sequence on the common preamble, and the resulting peaks will provide the locations of candidate base stations. The base station specific search is then performed in the vicinities of those peaks by using base station specific pseudo-noise sequences. With this two stage cell search, the searching window is drastically reduced. The preamble is matched to known values by a respective receiver to decode the signals and permit multiple signals to be transferred from the transmitter to the receiver. The preamble may comprise two parts, Preamble-1 and Preamble-2, which may be used in different systems, including multioutput, multi-input (MIMO) systems.

    Methods and Systems for Channelization
    87.
    发明申请
    Methods and Systems for Channelization 审中-公开

    公开(公告)号：US20170324523A1

    公开(公告)日：2017-11-09

    申请号：US15602318

    申请日：2017-05-23

    Applicant: Apple Inc.

    Inventor： Sophie Vrzic ,  Dong-Sheng Yu ,  Mo-Han Fong

    IPC: H04L5/00 ,  H04W72/04

    CPC classification number: H04L5/0005 ,  H04L5/0007 ,  H04L5/003 ,  H04L5/0039 ,  H04L5/0041 ,  H04L5/0044 ,  H04L5/0046 ,  H04L5/0053 ,  H04L5/0092 ,  H04L5/0094 ,  H04W72/044 ,  H04W72/0446

    Abstract: Methods and systems are described that are suitable for channelization, in particular, but not limited to, the IEEE 80216.m telecommunications standard. For a time-frequency resource, physical sub-carriers for each of one or more zones in the time-frequency resource are assigned to one or more zones having a respective type of transmission. At least one zone is allocated for a type of transmission using localized sub-carriers. The physical sub-carriers assigned to each zone are permuted to map to logical sub-carriers. Groups of resource blocks are formed, in which each resource block includes at least one logical sub-carrier for each of the one or more zones. The information defining the groups of resource blocks for each of the one or more zones can then be transmitted to a user. The information may be in the form of a zone configuration index.

    Efficient location updates, paging and short bursts
    90.
    发明授权
    Efficient location updates, paging and short bursts 有权
    高效的位置更新，寻呼和短脉冲串

    公开(公告)号：US09282535B2

    公开(公告)日：2016-03-08

    申请号：US13666479

    申请日：2012-11-01

    Applicant: Apple Inc.

    Inventor： Hang Zhang ,  Mo-Han Fong ,  Peiying Zhu ,  Wen Tong

    IPC: H04W72/00 ,  H04W68/02

    CPC classification number: H04W68/02 ,  H04L5/0091 ,  H04L5/0092 ,  H04W28/06 ,  H04W72/042

    Abstract: A mobile terminal in a wireless communication network may be one of several modes of operation. When in an idle mode, the mobile terminal may avoid a lengthy random access procedure normally associated with responding to a page from a base station, if the base station includes in the page an indication of a resource that the mobile terminal may utilize when responding to the page. Additionally, the mobile terminal may transmit an efficient location update MAC header to a base station, whether prompted to by a page from the base station or not. Furthermore, without leaving the idle mode or a sleep mode, the mobile terminal may exchange short data burst messages with a base station.

    Abstract translation: 无线通信网络中的移动终端可以是若干操作模式之一。 当处于空闲模式时，如果基站在页面中包括移动终端在响应时可以利用的资源的指示，则移动终端可以避免通常与响应于来自基站的页面相关联的冗长的随机接入过程 这一页。 另外，移动终端可以向基站发送有效的位置更新MAC报头，无论是否由来自基站的页面提示。 此外，在不离开空闲模式或睡眠模式的情况下，移动终端可以与基站交换短数据突发消息。

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