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    Adaptive scheduling of voice traffic in a multi-carrier communication environment
    227.
    发明授权
    Adaptive scheduling of voice traffic in a multi-carrier communication environment 有权
    多载波通信环境中语音流量的自适应调度

    公开(公告)号：US09572172B2

    公开(公告)日：2017-02-14

    申请号：US14944370

    申请日：2015-11-18

    Applicant: Apple Inc.

    Inventor： Jianming Wu ,  Wen Tong ,  Peiying Zhu

    IPC: H04W4/00 ,  H04W72/12 ,  H04L1/00 ,  H04L1/08 ,  H04L1/18 ,  H04L5/00 ,  H04W28/26 ,  H04W72/08

    CPC classification number: H04W72/12 ,  H04L1/0009 ,  H04L1/08 ,  H04L1/1867 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/006 ,  H04L5/0064 ,  H04W28/26 ,  H04W72/085 ,  H04W72/1263

    Abstract: The present invention provides a technique for scheduling data, and in particular, scheduling real-time or voice data for transmissions during a transmit time interval in a multi-carrier communication environment. For each transmit time interval, channel condition indicia for multiple users is determined, and an iterative scheduling process is then implemented based in part on the channel condition indicia. The iterative scheduling initially pre-assigns select tones for each of the remaining users that have not been permanently assigned tones for the given transmit time interval. Next, the remaining user having the least favorable channel conditions is selected as an active user. The newly selected active user is then permanently assigned the select tones that were initially pre-assigned to that particular user. The permanently assigned tones are removed from consideration, and the process is repeated until all the remaining users are permanently assigned unique tones for scheduling.

    Abstract translation: 本发明提供了一种用于调度数据的技术，特别是在多载波通信环境中的传输时间间隔期间调度实时或话音数据以进行传输。 对于每个发送时间间隔，确定多个用户的信道条件标记，并且部分地基于信道条件标记来实现迭代调度过程。 迭代调度最初为给定发送时间间隔未被永久分配的音调的每个剩余用户预先分配选择音调。 接下来，选择具有最不利条件的剩余用户作为活动用户。 然后，将新选择的活动用户永久分配给最初预分配给该特定用户的选择音。 从考虑中删除永久分配的音调，并重复该过程，直到所有剩余用户被永久分配唯一的音调进行调度。

    Methods and systems for wireless networks relays
    229.
    发明授权
    Methods and systems for wireless networks relays 有权
    无线网络中继的方法和系统

    公开(公告)号：US09553654B2

    公开(公告)日：2017-01-24

    申请号：US14965506

    申请日：2015-12-10

    Applicant: APPLE INC.

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

    IPC: H04B7/14 ,  H04B7/155 ,  H04W88/04 ,  H04L27/26 ,  H04W72/04 ,  H04W84/04

    CPC classification number: H04B7/14 ,  H04B7/155 ,  H04L27/2601 ,  H04W72/04 ,  H04W72/0446 ,  H04W84/047 ,  H04W88/04

    Abstract: Methods and systems are provided for use with wireless networks having one or more cell in which each cell includes a base station (BS), at least one relay station (RS) and at least one mobile station (MS). The at least one relay station can be used as an intermediate station for providing communication between the BS and MS. Methods are provided for allocating OFDM resources for communicating between the BS, RS and/or MS for example dividing transmission resources into uplink and downlink transmissions and methods of inserting pilot symbols intotransmission resources used by the RS. In some embodiments on the invention, the methods are consistent and/or can be used in conjunction with existing standards such as 802.16e.

    Abstract translation: RS使用的传输资源。 在本发明的一些实施例中，所述方法是一致的和/或可以与诸如802.16e的现有标准结合使用。

    PREAMBLES IN OFDMA SYSTEM
    230.
    发明申请
    PREAMBLES IN OFDMA SYSTEM 审中-公开
    OFDMA系统中的前缀

    公开(公告)号：US20170005852A1

    公开(公告)日：2017-01-05

    申请号：US15267396

    申请日：2016-09-16

    Applicant: APPLE INC.

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

    IPC: H04L27/26 ,  H04L7/04 ,  H04B7/04 ,  H04L5/00

    CPC classification number: H04L27/2692 ,  H04B7/02 ,  H04B7/0452 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L7/043 ,  H04L27/2613 ,  H04L27/265 ,  H04L27/2655 ,  H04L27/2686 ,  H04W24/02

    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.

    Abstract translation: 本发明提供插入到OFDMA帧中并具有参与传输的所有基站的公共序列的前同步码。 用户站使用公共前导码上的公共序列执行精细同步，并且所得到的峰值将提供候选基站的位置。 然后通过使用基站专用伪噪声序列，在那些峰附近执行基站专用搜索。 通过这两个阶段的单元格搜索，搜索窗口大大减少。 前导码由相应的接收机与已知值匹配以对信号进行解码，并允许多个信号从发射机传送到接收机。 前导码可以包括两个部分，即前导码1和前导码2，其可以在不同的系统中使用，包括多输入多输入（MIMO）系统。

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