知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

210 records (took 0.047 seconds)

    PILOT SYMBOL PATTERNS FOR TRANSMIT ANTENNAS
    162.
    发明申请
    PILOT SYMBOL PATTERNS FOR TRANSMIT ANTENNAS 审中-公开
    发射天线的引导符号模式

    公开(公告)号：US20160164706A1

    公开(公告)日：2016-06-09

    申请号：US15046934

    申请日：2016-02-18

    Applicant: Apple Inc.

    Inventor： Jianglei Ma ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hang Zhang ,  Hua Xu ,  Dong-Sheng Yu

    IPC: H04L27/26 ,  H04B7/08 ,  H04L5/00 ,  H04B7/06

    CPC classification number: H04L27/2611 ,  H04B7/06 ,  H04B7/08 ,  H04L5/0007 ,  H04L5/0023 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/2626 ,  H04L27/2647

    Abstract: A method and apparatus for improving channel estimation within an OFDM communication system. Channel estimation in OFDM is usually performed with the aid of pilot symbols. The pilot symbols are typically spaced in time and frequency. The set of frequencies and times at which pilot symbols are inserted is referred to as a pilot pattern. In some cases, the pilot pattern is a diagonal-shaped lattice, either regular or irregular. The method first interpolates in the direction of larger coherence (time or frequency). Using these measurements, the density of pilot symbols in the direction of faster change will be increased thereby improving channel estimation without increasing overhead. As such, the results of the first interpolating step can then be used to assist the interpolation in the dimension of smaller coherence (time or frequency).

    Abstract translation: 一种用于改善OFDM通信系统内的信道估计的方法和装置。 OFDM中的信道估计通常借助于导频符号来执行。 导频符号通常在时间和频率上间隔开。 将导频符号插入的频率和时间的集合称为导频模式。 在一些情况下，导频图案是对角线形格子，规则的或不规则的。 该方法首先在较大相干性（时间或频率）的方向内插。 使用这些测量，导频符号在更快变化方向上的密度将增加，从而改善信道估计而不增加开销。 因此，第一内插步骤的结果然后可以用于辅助尺寸较小的相干性（时间或频率）的内插。

    Distributed ARQ for wireless communication system
    165.
    发明授权
    Distributed ARQ for wireless communication system 有权
    分布式ARQ用于无线通信系统

    公开(公告)号：US09160494B2

    公开(公告)日：2015-10-13

    申请号：US13944318

    申请日：2013-07-17

    Applicant: Apple Inc.

    Inventor： Hang Zhang ,  Peiying Zhu ,  Wen Tong

    IPC: H04B7/14 ,  H04L1/18 ,  H04W8/30 ,  H04W40/22 ,  H04B7/15

    CPC classification number: H04L1/18 ,  H04B7/15 ,  H04W8/30 ,  H04W40/22

    Abstract: Systems and apparatus for providing distributed Automatic Repeat Request (ARQ) in a wireless communication system are described herein. In one embodiment, a relay station interconnects a base station of the wireless communication system and one or more mobile stations. A first ARQ process is performed for a first connection between the base station and the relay station. A separate second ARQ process is performed for a second connection between the relay station and a mobile station. In this manner, rather than having end-to-end ARQ between the base station and the mobile station, a distributed ARQ process is provided.

    Abstract translation: 本文描述了用于在无线通信系统中提供分布式自动重传请求（ARQ）的系统和装置。 在一个实施例中，中继站将无线通信系统的基站和一个或多个移动站互连。 对于基站和中继站之间的第一连接执行第一ARQ处理。 针对中继站和移动站之间的第二连接执行单独的第二ARQ处理。 以这种方式，不是在基站和移动台之间具有端对端ARQ，而是提供分布式ARQ过程。

    MAC packet data unit construction for wireless system
    167.
    发明授权
    MAC packet data unit construction for wireless system 有权
    无线系统的MAC数据包数据单元构建

    公开(公告)号：US08885661B2

    公开(公告)日：2014-11-11

    申请号：US13644908

    申请日：2012-10-04

    Applicant: Apple Inc.

    Inventor： Hang Zhang ,  Mon-Han Fong

    IPC: H04J3/16 ,  H04W12/02 ,  H04W28/06 ,  H04L1/18

    CPC classification number: H04W28/065 ,  H04L1/1867 ,  H04W12/02

    Abstract: A method for wireless communication using MAC PDUs. The method includes determining one or more characteristics of a service flow and selecting on the basis of the one or more characteristics a MAC PDU header type among a plurality of MAC PDU header types. The service flow data is encapsulated in MAC PDUs with a header of the selected type. The MAC PDUs with the encapsulated service flow data are then wirelessly transmitted. Also, a method for communication between a Base Station (BS) and a Subscriber Station (SS). The method includes generating at the BS a plurality of MAC PDU packets with a payload component holding service flow data and a plurality of MAC PDU packets without payload component, carrying control information. The method also includes transmitting wirelessly the MAC PDU packets with the payload component and the MAC PDU packets with the control information to the SS.

    Abstract translation: 一种使用MAC PDU进行无线通信的方法。 该方法包括确定服务流的一个或多个特性，并且基于一个或多个特性来选择多个MAC PDU头类型中的MAC PDU头类型。 服务流数据被封装在具有所选类型的报头的MAC PDU中。 具有封装业务流数据的MAC PDU随后被无线传输。 另外，一种用于基站（BS）和用户站（SS）之间的通信的方法。 该方法包括在BS处生成具有保存业务流数据的有效载荷分量的多个MAC PDU分组，以及携带控制信息的无有效载荷分量的多个MAC PDU分组。 该方法还包括将具有控制信息的有效载荷分量和MAC PDU分组的MAC PDU分组无线发送到SS。

    Distributed ARQ for Wireless Communication System
    168.
    发明申请
    Distributed ARQ for Wireless Communication System 审中-公开
    无线通信系统的分布式ARQ

    公开(公告)号：US20130301518A1

    公开(公告)日：2013-11-14

    申请号：US13944318

    申请日：2013-07-17

    Applicant: Apple Inc.

    Inventor： Hang Zhang ,  Peiying Zhu ,  Wen Tong

    IPC: H04W40/22

    CPC classification number: H04L1/18 ,  H04B7/15 ,  H04W8/30 ,  H04W40/22

    Abstract: Systems and apparatuss for providing distributed Automatic Repeat Request (ARQ) in a wireless communication system are described herein. In one embodiment, a relay station interconnects a base station of the wireless communication system and one or more mobile stations. A first ARQ process is performed for a first connection between the base station and the relay station. A separate second ARQ process is performed for a second connection between the relay station and a mobile station. In this manner, rather than having end-to-end ARQ between the base station and the mobile station, a distributed ARQ process is provided.

    Abstract translation: 在这里描述了用于在无线通信系统中提供分布式自动重传请求（ARQ）的系统和装置。 在一个实施例中，中继站将无线通信系统的基站和一个或多个移动站互连。 对于基站和中继站之间的第一连接执行第一ARQ处理。 针对中继站和移动站之间的第二连接执行单独的第二ARQ处理。 以这种方式，不是在基站和移动台之间具有端对端ARQ，而是提供分布式ARQ过程。

    Efficient Location Updates, Paging and Short Bursts
    169.
    发明申请
    Efficient Location Updates, Paging and Short Bursts 有权
    高效的位置更新，寻呼和短脉冲

    公开(公告)号：US20130064154A1

    公开(公告)日：2013-03-14

    申请号：US13666426

    申请日：2012-11-01

    Applicant: Apple Inc.

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

    IPC: H04W52/02 ,  H04W72/04

    CPC classification number: H04W72/0413 ,  H04W68/00 ,  H04W74/0866

    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。

Patent Agency Ranking