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    Methods and Systems for Orthogonal Frequency Division Multiplexing (OFDM) Multiple Zone Partitioning
    171.
    发明申请
    Methods and Systems for Orthogonal Frequency Division Multiplexing (OFDM) Multiple Zone Partitioning 有权
    正交频分复用（OFDM）多区域分区的方法和系统

    公开(公告)号：US20130301761A1

    公开(公告)日：2013-11-14

    申请号：US13944010

    申请日：2013-07-17

    Applicant: Apple Inc.

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

    IPC: H04L27/26

    CPC classification number: H04L5/0051 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0618 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04L25/02 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2647 ,  H04W52/325

    Abstract: Aspects of the invention include methods and devices for inserting data and pilot symbols into Orthogonal Frequency Division Multiplexing (OFDM) frames having a time domain and a frequency domain. A method involves inserting in at least one zone of a first type a two dimensional array of data and pilot symbols in time and frequency and inserting in at least one zone of a second type a two dimensional array of data and pilot symbols in time and frequency. In some implementations the zone of the first type comprises common pilot symbols that can be detected by all receivers receiving the OFDM frame. In some implementations the zone of the second type comprises dedicated pilot symbols that are only detectable by a receiver that is aware of pre-processing used to encode the dedicated pilot symbols.

    Abstract translation: 本发明的方面包括用于将数据和导频符号插入具有时域和频域的正交频分复用（OFDM）帧的方法和装置。 一种方法包括在时间和频率上插入数据和导频符号的二维阵列的第一类型的至少一个区域，并在第二类型的至少一个区域中插入时间和频率的数据和导频符号的二维阵列 。 在一些实现中，第一类型的区域包括可由接收OFDM帧的所有接收机检测的公共导频符号。 在一些实施方式中，第二类型的区域包括专用导频符号，其仅可以被知道用于对专用导频符号进行编码的预处理的接收机检测。

    Modulation Division Multiple Access
    173.
    发明申请
    Modulation Division Multiple Access 审中-公开
    调制分多址

    公开(公告)号：US20130034049A1

    公开(公告)日：2013-02-07

    申请号：US13649811

    申请日：2012-10-11

    Applicant: APPLE INC.

    Inventor： Ming Jia ,  Jianglei Ma ,  Peiying Zhu ,  Wen Tong ,  Curt Dodd

    IPC: H04B7/14 ,  H04W72/04

    CPC classification number: H03C3/00 ,  H04L25/0226 ,  H04L27/3488

    Abstract: The present invention employs hierarchical modulation to simultaneously transmit information on different modulation layers using a carrier RF signal. Initially, first data to be transmitted is assigned to a first modulation layer and second data is assigned to a second modulation layer. In one embodiment of the present invention, the first and second data are assigned based on reliability criteria. The first and second modulation layers are hierarchical modulation layers of the carrier RF signal. Once assigned, the first data is transmitted using the first modulation layer of the carrier RF signal and the second data is transmitted using the second modulation layer of the carrier RF signal. In one embodiment of the present invention, information may be transmitted to one end user using one modulation layer, and information may be transmitted to a different end user using a different modulation layer.

    Abstract translation: 本发明采用层次调制，使用载波RF信号同时发送不同调制层上的信息。 首先，要发送的第一数据被分配给第一调制层，并且第二数据被分配给第二调制层。 在本发明的一个实施例中，基于可靠性标准来分配第一和第二数据。 第一和第二调制层是载波RF信号的分层调制层。 一旦被分配，使用载波RF信号的第一调制层发送第一数据，并且使用载波RF信号的第二调制层发送第二数据。 在本发明的一个实施例中，可以使用一个调制层向一个终端用户发送信息，并且可以使用不同的调制层向不同的终端用户发送信息。

    Uplink control in a wireless communication network
    175.
    发明授权
    Uplink control in a wireless communication network 有权

    公开(公告)号：US11425713B2

    公开(公告)日：2022-08-23

    申请号：US16900954

    申请日：2020-06-14

    Applicant: Apple Inc.

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

    IPC: H04W4/00 ,  H04W72/04 ,  H04W74/00 ,  H04W74/08 ,  H04L5/00 ,  H04L27/26 ,  H04J11/00 ,  H04W84/12 ,  H04W88/08 ,  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.

    Pilot scheme for a MIMO communication system
    177.
    发明授权
    Pilot scheme for a MIMO communication system 有权

    公开(公告)号：US11349531B2

    公开(公告)日：2022-05-31

    申请号：US17009405

    申请日：2020-09-01

    Applicant: Apple Inc.

    Inventor： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Moussa Abdi

    IPC: H04W4/00 ,  H04B7/0452 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04B7/0413 ,  H04W88/08 ,  H04J13/18 ,  H04L1/06 ,  H04L25/02 ,  H04J13/16

    Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.

    Pilot scheme for a MIMO communication system
    178.
    发明授权
    Pilot scheme for a MIMO communication system 有权

    公开(公告)号：US11223397B2

    公开(公告)日：2022-01-11

    申请号：US16786679

    申请日：2020-02-10

    Applicant: Apple Inc.

    Inventor： Jianglei Ma ,  Ming Jia ,  Hua Xu ,  Wen Tong ,  Peiying Zhu ,  Moussa Abdi

    IPC: H04W4/00 ,  H04B7/0452 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04B7/0413 ,  H04W88/08 ,  H04J13/18 ,  H04L1/06 ,  H04L25/02 ,  H04J13/16

    Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.

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