公开(公告)号：US09762300B2

公开(公告)日：2017-09-12

申请号：US14499316

申请日：2014-09-29

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

CPC classification number: H04B7/0452 ,  H04B7/0413 ,  H04J13/18 ,  H04J2013/165 ,  H04L1/0625 ,  H04L5/001 ,  H04L5/0026 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0051 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2613 ,  H04W72/04 ,  H04W72/044 ,  H04W88/08

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.

公开(公告)号：US09705720B2

公开(公告)日：2017-07-11

申请号：US15226101

申请日：2016-08-02

Applicant: Apple Inc.

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

IPC: H04L27/26 ,  H04L25/02 ,  H04L5/00 ,  H04B7/06 ,  H04B7/08

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).

公开(公告)号：US09532386B2

公开(公告)日：2016-12-27

申请号：US14679524

申请日：2015-04-06

Applicant: Apple Inc.

Inventor： Jianglei Ma ,  Hua Xu ,  Ming Jia ,  Sarah Boumendil ,  Evelyne Le Strat ,  Hang Zhang ,  Peiying Zhu ,  Wen Tong

IPC: H04W74/08 ,  H04L1/06 ,  H04L5/02 ,  H04W74/00 ,  H04L27/26

CPC classification number: H04W74/0891 ,  H04L1/06 ,  H04L1/0618 ,  H04L5/023 ,  H04L27/2627 ,  H04L27/2657 ,  H04L27/2662 ,  H04W74/006 ,  H04W74/0866

Abstract: Physical layer structures and access schemes for use in such networks are described and in particular initial access channel (IACH) structures are proposed. A spectrum efficient downlink (DL) IACH design supports different types of User Equipment (UE) capabilities and different system bandwidths. An IACH includes the synchronization channel (SCH) and broadcast-control channel (BCH). A non-uniform SCH for all system bandwidths is provided, as well as scalable bandwidth BCH depending on system bandwidth. An initial access procedure is provided, as well as an access procedure.

Abstract translation: 描述了用于这种网络的物理层结构和访问方案，并且特别地提出了初始接入信道（IACH）结构。 频谱高效下行链路（DL）IACH设计支持不同类型的用户设备（UE）能力和不同的系统带宽。 IACH包括同步信道（SCH）和广播控制信道（BCH）。 提供了所有系统带宽的不均匀SCH，以及根据系统带宽的可扩展带宽BCH。 提供初始访问过程以及访问过程。

公开(公告)号：US20160308702A1

公开(公告)日：2016-10-20

申请号：US15195083

申请日：2016-06-28

Applicant: Apple Inc.

Inventor： Jianglei Ma ,  Wen Tong ,  Ming Jia ,  Hua Xu ,  Peiying Zhu ,  Hang Zhang

IPC: H04L27/26 ,  H04L5/00 ,  H04L1/00

CPC classification number: H04L27/263 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0096 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/2634 ,  H04L27/2646

Abstract: Methods and systems are provided that enable an OFDM transmitter to be used for transmitting conventional OFDM or a form of transformed OFDM. A technique is provided for transforming a coded and modulated sequence of samples prior to an IFFT that enables the transformed sequence of samples to be transmitted using conventional OFDM or transformed OFDM. The selection of a transform function for transforming the coded and modulated sequence of samples may be based on optimizing the transform function for particular operating conditions between the transmitter and receiver. In some embodiments of the invention OFDM and time transformed OFDM are multiplexed in time and/or frequency in a transmission frame. In some embodiments of the invention a pilot pattern is provided in which the pilot are sent using OFDM and data is sent using OFDM and/or transformed OFDM.

Abstract translation: 提供了使OFDM发射机能够用于传输常规OFDM或变换OFDM形式的方法和系统。 提供了一种用于在IFFT之前变换样本的编码和调制序列的技术，其使得能够使用常规OFDM或变换OFDM来发送变换的样本序列。 用于变换样本的编码和调制序列的变换函数的选择可以基于优化发射机和接收机之间的特定操作条件的变换函数。 在本发明的一些实施例中，OFDM和时变OFDM在传输帧中以时间和/或频率被复用。 在本发明的一些实施例中，提供了导频模式，其中使用OFDM发送导频，并且使用OFDM和/或经变换的OFDM发送数据。

公开(公告)号：US20160255568A1

公开(公告)日：2016-09-01

申请号：US15149739

申请日：2016-05-09

Applicant: Apple Inc.

Inventor： Hang Zhang ,  Peiying Zhu ,  Wen Tong ,  Nimal Gamini Senarath ,  Derek Yu ,  David G. Steer

IPC: H04W40/12 ,  H04W76/02 ,  H04W72/04 ,  H04L29/06 ,  H04W28/18 ,  H04B7/26

CPC classification number: H04W40/12 ,  H04B7/2606 ,  H04L12/4633 ,  H04L47/24 ,  H04L47/28 ,  H04L69/22 ,  H04W16/26 ,  H04W28/18 ,  H04W28/24 ,  H04W40/22 ,  H04W72/0413 ,  H04W72/042 ,  H04W76/12 ,  H04W84/047 ,  H04W84/12

Abstract: A wireless communication access path exists between an ingress station and an egress station. A logical communication tunnel is established between the ingress and egress stations directly or through any number of intermediate relay stations to handle session flows of PDUs. As PDUs arrive, the ingress station may determine and add information bearing on an identified QoS associated with the PDU to the PDUs before they are delivered to the downstream egress station(s) or intermediate relay station(s). The information may be used by the downstream stations to schedule the PDUs for further delivery. The information may also be used by the egress station to schedule the PDUs for delivery.

Abstract translation: 在入站和出站之间存在无线通信接入路径。 直接或通过任意数量的中间中继站在入站和出站之间建立逻辑通信隧道，以处理PDU的会话流。 当PDU到达时，进入站可以在将PDU发送到下游出口站或中间中继站之前，将与PDU相关联的识别的QoS有关的信息确定并添加到PDU。 该信息可以由下游站使用以调度PDU以进一步传送。 这些信息也可以被出口站用来安排PDU进行传送。

公开(公告)号：US20160183245A1

公开(公告)日：2016-06-23

申请号：US15056720

申请日：2016-02-29

Applicant: APPLE INC.

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

IPC: H04W72/04 ,  H04W68/00

CPC classification number: H04W72/0413 ,  H04W68/00 ,  H04W72/00 ,  H04W72/04 ,  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.

公开(公告)号：US09363729B2

公开(公告)日：2016-06-07

申请号：US13893144

申请日：2013-05-13

Applicant: Apple Inc.

Inventor： Nimal Senarath ,  Bill Gage ,  Shalini Periyalwar ,  Wen Tong

IPC: H04W4/00 ,  H04W36/24 ,  H04W36/18

CPC classification number: H04W36/18 ,  H04L5/0048 ,  H04W36/0072 ,  H04W36/20 ,  H04W36/24 ,  H04W72/0446 ,  H04W80/02

Abstract: The present invention provides a method and system for facilitating efficient handoff and data throughput in mobile broadband communication systems. Methods implemented by a system constructed in accordance with the principles of the present invention include selectively enabled soft handoff, performing Layer 2 bearer functions at the base station and using the mobile device to coordinate soft handoff and interference avoidance without the need for a centralized coordination function.

公开(公告)号：US09294252B2

公开(公告)日：2016-03-22

申请号：US14450987

申请日：2014-08-04

Applicant: APPLE INC.

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

IPC: H04J11/00 ,  H04L5/00 ,  H04W72/04 ,  H04W28/06 ,  H04L27/26

CPC classification number: H04W72/0453 ,  H04L5/0058 ,  H04L5/0091 ,  H04L5/0092 ,  H04L27/2601 ,  H04W28/06 ,  H04W72/042

Abstract: A channel descriptor management message is transmitted on a broadcast connection to a mobile terminal. The channel descriptor management message provides a format for a frame. The frame includes a resource space. The channel descriptor management message defines a plurality of channels within the resource space and allocates at least one of the channels to a plurality of users. Subsequent resource allocation messages may refer to a location within a channel rather than a location within the entire resource space.

Abstract translation: 信道描述符管理消息在广播连接上被发送到移动终端。 信道描述符管理消息提供帧的格式。 该帧包括资源空间。 信道描述符管理消息定义资源空间内的多个信道，并且将至少一个信道分配给多个用户。 随后的资源分配消息可以指代信道内的位置，而不是整个资源空间内的位置。

公开(公告)号：US09220049B2

公开(公告)日：2015-12-22

申请号：US14703185

申请日：2015-05-04

Applicant: Apple Inc.

Inventor： Guo Qiang Wang ,  Wen Tong ,  Shiquan Wu

IPC: H04B3/36 ,  H04B7/14 ,  H04W40/22 ,  H04B7/155

CPC classification number: H04B7/15592 ,  H04B7/155 ,  H04B7/2606 ,  H04L45/54 ,  H04L45/586 ,  H04L45/745 ,  H04L47/32 ,  H04W40/12 ,  H04W40/22 ,  H04W40/24 ,  H04W76/12

Abstract: In a wireless multi-hop relay network arranged in a tree topology, the base station and one or more relay stations are associated as a virtual base station (VBS). The base station and each relay station have a unique virtual base station identifier (VBS-ID) associated with the path defined by the base station and the one or more relay stations. a relay station in the branch uses its VBS-ID for communicating with an attached subscriber station (e.g. a mobile station) such that communications between the base station and subscriber station occur via the VBS. Subscriber station data communications are relayed between the base station and the one or more relay stations over the VBS via a tunnel connection. The VBS is autoconfigurable. Mobility for subscriber stations and relay stations is provided through reconfiguration of VBS's.

Abstract translation: 在以树形拓扑布置的无线多跳中继网络中，基站和一个或多个中继站作为虚拟基站（VBS）相关联。 基站和每个中继站具有与由基站和一个或多个中继站定义的路径相关联的唯一的虚拟基站标识符（VBS-ID）。 分支中的中继站使用其VBS-ID与附加的用户站（例如，移动站）进行通信，使得基站和用户站之间的通信经由VBS发生。 订户站数据通信通过隧道连接在VBS之间在基站和一个或多个中继站之间中继。 VBS是可自动配置的。 通过VBS的重新配置提供用户站和中继站的移动性。

公开(公告)号：US20150215921A1

公开(公告)日：2015-07-30

申请号：US14685252

申请日：2015-04-13

Applicant: APPLE INC.

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

IPC: H04W72/04 ,  H04W72/08 ,  H04W74/06 ,  H04B7/04

CPC classification number: H04B7/0478 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0671 ,  H04B7/0673 ,  H04B7/0691 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/005 ,  H04L5/006 ,  H04L5/023 ,  H04L27/2601 ,  H04W48/08 ,  H04W72/042 ,  H04W72/044 ,  H04W72/08 ,  H04W74/06

Abstract: Aspects of the present invention provide additional MAC functionality to support the PHY features of a wireless communication system framework. The additional MAC functionality aids in enabling feedback from wireless terminals to base stations. In some aspects of the invention the feedback is provided on an allocated feedback channel. In other aspects of the invention the feedback is provided by MAC protocol data units (PDU) in a header, mini-header, or subheader. The feedback may be transmitted from the wireless terminal to the base station autonomously by the wireless terminal or in response to an indication from the base station that feedback is requested. Aspects of the invention also provide for allocating feedback resources to form a dedicated feedback channel. One or more of these enhancements is included in a given implementation. Base stations and wireless terminals are also described upon which methods described herein can be implemented.

Abstract translation: 本发明的方面提供了附加的MAC功能来支持无线通信系统框架的PHY特征。 附加的MAC功能有助于实现从无线终端到基站的反馈。 在本发明的一些方面，在分配的反馈信道上提供反馈。 在本发明的其它方面，反馈由报头，小标题或子报头中的MAC协议数据单元（PDU）提供。 反馈可以由无线终端自主地从无线终端发送到基站，或者响应于来自基站的指示，请求反馈。 本发明的各方面还提供分配反馈资源以形成专用反馈信道。 这些增强中的一个或多个包括在给定的实现中。 还描述了基站和无线终端，其中可以实现本文描述的方法。