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    Communication of control information using alert flag and version number
    81.
    发明授权
    Communication of control information using alert flag and version number 有权

    公开(公告)号：US10321440B2

    公开(公告)日：2019-06-11

    申请号：US15595404

    申请日：2017-05-15

    Applicant: Apple Inc.

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

    IPC: H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04W24/10 ,  H04W72/08 ,  H04W48/12 ,  H04W88/06 ,  H04W48/10 ,  H04W48/14

    Abstract: To effectively and efficiently provide control information, a broadcast pointer channel (BPCH) may be used to identify the type and perhaps relative location of control information that is being provided in a given frame structure, such as a sub-frame, frame, or superframe. A sub-frame (or like framing entity, such a frame or superframe) may have a BPCH and a corresponding system control information segment in which control information may reside. The system control information segment may have any number of control information blocks, wherein each control information block that is present may correspond to a particular type of control information. The BPCH is used to identify the type of control information that is present in a corresponding system control information segment, and if needed or desired, the relative locations of the various control information.

    Preambles in OFDMA system
    83.
    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
    88.
    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.

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