Pilot Symbol Patterns for Transmission via a Plurality of Antennas
    82.
    发明申请
    Pilot Symbol Patterns for Transmission via a Plurality of Antennas 审中-公开
    通过多个天线传输的先导符号模式

    公开(公告)号:US20160359652A1

    公开(公告)日:2016-12-08

    申请号:US15226101

    申请日:2016-08-02

    Applicant: Apple Inc.

    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。

    Uplink Control in a Wireless Communication Network
    85.
    发明申请
    Uplink Control in a Wireless Communication Network 审中-公开
    无线通信网络中的上行链路控制

    公开(公告)号:US20160183257A1

    公开(公告)日:2016-06-23

    申请号:US15055793

    申请日:2016-02-29

    Applicant: Apple Inc.

    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.

    Abstract translation: 提供一种方法和系统,其具有上行链路控制结构和具有最小信号开销的导频信号,用于在无线通信网络中提供信道估计和数据解调。 上行链路控制结构使得移动终端能够与相应的基站进行通信,以执行各种功能,包括获得初始系统访问,提交带宽请求,触发协商服务的继续或提供建议的分配重配置报头。 提供专用随机接入信道以通信地耦合基站和移动终端,使得移动终端可以选择随机接入信令标识。 在基站接收资源请求以从移动终端上行资源信息,并且从移动终端接收初始访问信息请求以配置基站连接。 提供具有不同密度配置的导频信号以包括用于多个连续资源块的低密度符号模式和用于单个资源块的高密度符号模式。

    Channel Quality Feedback for Multi-Carrier Operation of a Mobile Station
    87.
    发明申请
    Channel Quality Feedback for Multi-Carrier Operation of a Mobile Station 审中-公开
    移动台多载波操作的信道质量反馈

    公开(公告)号:US20150288504A1

    公开(公告)日:2015-10-08

    申请号:US14723574

    申请日:2015-05-28

    Applicant: Apple Inc.

    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.

    Abstract translation: 为了有效和高效地提供控制信息,可以使用广播指针信道(BPCH)来识别在给定帧结构(例如子帧,帧或超帧)中提供的控制信息的类型和可能的相对位置 。 子帧(或类似的成帧实体,例如帧或超帧)可以具有BPCH和控制信息可以驻留在其中的对应的系统控制信息段。 系统控制信息段可以具有任何数量的控制信息块,其中存在的每个控制信息块可以对应于特定类型的控制信息。 BPCH用于识别存在于对应的系统控制信息段中的控制信息的类型,并且如果需要或期望,则各种控制信息的相对位置。

    Method and system for providing an uplink structure and minimizing pilot signal overhead in a wireless communication network
    88.
    发明授权
    Method and system for providing an uplink structure and minimizing pilot signal overhead in a wireless communication network 有权
    用于在无线通信网络中提供上行链路结构并最小化导频信号开销的方法和系统

    公开(公告)号:US08989148B2

    公开(公告)日:2015-03-24

    申请号:US14177716

    申请日:2014-02-11

    Applicant: Apple Inc.

    Abstract: An uplink control structure and pilot signal having minimal signal overhead for providing channel estimation and data demodulation in a wireless communication network are presented. The uplink control structure enables mobile terminals to communicate with 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 mobile terminal allowing the mobile terminal to 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, including low density symbol patterns for multiple contiguous resource blocks and high density symbol patterns for single resource blocks.

    Abstract translation: 提出了一种具有最小信号开销的上行链路控制结构和导频信号,用于在无线通信网络中提供信道估计和数据解调。 上行链路控制结构使得移动终端能够与基站进行通信,以执行各种功能,包括获得初始系统访问,提交带宽请求,触发协商服务的继续或提供建议的分配重配置报头。 提供专用随机接入信道以通信地耦合基站和移动终端,允许移动终端选择随机接入信令标识。 在基站接收资源请求以从移动终端上行资源信息,并且从移动终端接收初始访问信息请求以配置基站连接。 提供具有不同密度配置的导频信号,包括用于多个连续资源块的低密度符号模式和用于单个资源块的高密度符号模式。

    Methods and systems for HARQ protocols
    89.
    发明授权
    Methods and systems for HARQ protocols 有权
    HARQ协议的方法和系统

    公开(公告)号:US08959410B2

    公开(公告)日:2015-02-17

    申请号:US14012166

    申请日:2013-08-28

    Applicant: Apple Inc.

    Abstract: Methods described herein are for wireless communication systems. One aspect of the invention is directed to a method for a HARQ process, in which the HARQ process includes a first transmission of an encoder packet and at least one retransmission. The method involves allocating a transmission resource for each respective transmission. The method involves transmitting control information from a base station to a mobile station for each respective transmission. The control information includes information to uniquely identify the HARQ process and an identification of one of a time resource, a frequency resource and a time and frequency resource that is allocated for the transmission. Other aspects of the invention are directed to acknowledging a downlink HARQ transmission, rescheduling an uplink HARQ transmission, and error recovery for an uplink HARQ transmission.

    Abstract translation: 本文描述的方法用于无线通信系统。 本发明的一个方面涉及一种用于HARQ过程的方法,其中所述HARQ过程包括编码器分组的第一传输和至少一个重传。 该方法包括为每个相应的传输分配传输资源。 该方法涉及从每个相应传输的基站向移动台发送控制信息。 控制信息包括用于唯一地识别HARQ过程的信息和为传输分配的时间资源,频率资源和时间和频率资源之一的标识。 本发明的其他方面涉及确认下行链路HARQ传输,重新安排上行链路HARQ传输以及用于上行链路HARQ传输的错误恢复。

    Wireless Feedback System and Method
    90.
    发明申请
    Wireless Feedback System and Method 有权
    无线反馈系统和方法

    公开(公告)号:US20140064395A1

    公开(公告)日:2014-03-06

    申请号:US14072779

    申请日:2013-11-05

    Applicant: Apple Inc.

    Abstract: A codebook C is provided in a MIMO transmitter as well as a MIMO receiver. The codebook C will include M codewords ci, where i is a unique codeword index for each codeword ci. Each codeword defines weighting factors to apply to the MIMO signals, and may correspond to channel matrices or vectors to apply to the MIMO signals prior to transmission from the respective antennas of the MIMO transmitter. The present invention creates codeword subsets Si for each codeword ci of the codebook C. Each codeword subset Si defines L codewords cj, which are selected from all the codewords ci in the codebook C. The codewords cj in a codeword subset Si are the L codewords in the entire codebook that best correlate with the corresponding codeword ci.

    Abstract translation: 码本C被提供在MIMO发射机以及MIMO接收机中。 码本C将包括M个码字ci,其中i是每个码字ci的唯一码字索引。 每个码字定义了应用于MIMO信号的加权因子,并且可以对应于在从MIMO发射机的各个天线发送之前应用于MIMO信号的信道矩阵或向量。 本发明为码本C的每个码字ci创建码字子集Si。每个码字子集Si定义了从码本C中的所有码字ci中选择的L个码字cj。码字子集Si中的码字cj是L个码字 在整个码本中与相应的码字ci最相关。

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