公开(公告)号：US08989206B2

公开(公告)日：2015-03-24

申请号：US13645027

申请日：2012-10-04

Applicant: Apple Inc.

Inventor： Hang Zhang ,  Mo-Han Fong

IPC: H04J3/16 ,  H04W28/06 ,  H04W12/02 ,  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。

公开(公告)号：US08976843B2

公开(公告)日：2015-03-10

申请号：US14079131

申请日：2013-11-13

Applicant: Apple Inc.

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

IPC: H04B1/707 ,  H04J13/00 ,  H04B7/06 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04J13/16 ,  H04L25/03

CPC classification number: H04J13/0003 ,  H04B1/707 ,  H04B7/0404 ,  H04B7/0678 ,  H04J13/00 ,  H04J13/16 ,  H04L5/0016 ,  H04L5/0026 ,  H04L5/0048 ,  H04L5/005 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0232 ,  H04L25/03866 ,  H04L27/2613 ,  H04L27/2627 ,  H04W72/044

Abstract: In some embodiments of the invention, OFDM symbols are transmitted as a plurality of clusters. A cluster includes a plurality of OFDM sub-carriers in frequency, over a plurality of OFDM symbol durations in time. Each cluster includes data as well as pilot information as a reference signal for channel estimation. In some embodiments, a plurality of clusters collectively occupy the available sub-carrier set in the frequency domain that is used for transmission. In some embodiments of the invention data and/or pilots are spread within each cluster using code division multiplexing (CDM). In some embodiments pilots and data are separated by distributing data on a particular number of the plurality of OFDM symbol durations and pilots on a remainder of the OFDM symbol durations. CDM spreading can be performed in time and/or frequency directions.

Abstract translation: 在本发明的一些实施例中，OFDM符号作为多个簇发送。 在多个OFDM符号持续时间内，群集包括频率上的多个OFDM子载波。 每个簇包括数据以及作为信道估计的参考信号的导频信息。 在一些实施例中，多个集群共同地占用用于传输的频域中的可用子载波集合。 在本发明的一些实施例中，使用码分多路复用（CDM）在每个簇内扩展数据和/或导频。 在一些实施例中，通过在OFDM码元持续时间的其余部分上分配关于多个OFDM符号持续时间的特定数目和导频上的数据来分离导频和数据。 可以在时间和/或频率方向上执行CDM扩展。

公开(公告)号：US08958300B2

公开(公告)日：2015-02-17

申请号：US13632366

申请日：2012-10-01

Applicant: Apple Inc.

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

IPC: H04W4/00 ,  H04L12/28 ,  G01R31/08 ,  H04B7/26 ,  H04L12/46 ,  H04W76/02 ,  H04W16/26 ,  H04W28/18 ,  H04W84/04

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: One or more relay stations may be employed along a wireless communication access path between an ingress station and an egress station. A logical communication tunnel is established between the ingress and egress stations through any number of intermediate relay stations to handle session flows of PDUs. As PDUs arrive, the ingress station may determine and add scheduling information to the PDUs before they are delivered to the downstream intermediate relay stations or egress stations. The scheduling information is used by the downstream stations to schedule the PDUs for further delivery. The scheduling information may also be used by the egress station to schedule the PDUs for delivery. The scheduling information added to the PDU by the ingress station bears on a QoS class associated with the PDU, a deadline for the egress station to deliver the PDU, or a combination thereof.

Abstract translation: 可以沿入站和出站之间的无线通信接入路径采用一个或多个中继站。 通过任意数量的中间中继站在进入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PDU递送到下游中间中继站或出站之前确定并将调度信息添加到PDU。 下游站使用调度信息来调度PDU以进一步传送。 调度信息也可以由出站使用，以调度用于传送的PDU。 由入站站添加到PDU的调度信息承载在与PDU相关联的QoS类别，出站台递送PDU的最后期限或其组合。

公开(公告)号：US20150009886A1

公开(公告)日：2015-01-08

申请号：US14494810

申请日：2014-09-24

Applicant: Apple Inc.

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

IPC: H04W72/00 ,  H04L12/18 ,  H04W4/08 ,  H04W48/10

CPC classification number: H04W72/0406 ,  H04B7/0413 ,  H04L1/1887 ,  H04L5/023 ,  H04L12/185 ,  H04L27/2627 ,  H04L61/2069 ,  H04W4/08 ,  H04W48/10 ,  H04W72/005 ,  H04W72/04 ,  H04W74/004 ,  H04W74/006 ,  Y02D30/30

Abstract: A method and system for allocating shareable wireless transmission resources. A resource pool is established. The resource pool is divided into a plurality of physical layer allocation units usable for wirelessly transmitting control information and traffic data. The allocation units are assigned at the media access control layer for the wireless transmission of the control information and traffic data. The system and method of the present invention also allows mobile stations to be dynamically grouped into multicast groupings to reduce system overhead resource requirements.

公开(公告)号：US20140348271A1

公开(公告)日：2014-11-27

申请号：US14458131

申请日：2014-08-12

Applicant: Apple Inc.

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

IPC: H04L27/26 ,  H04L5/00 ,  H04L25/02

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。

公开(公告)号：US20140254545A1

公开(公告)日：2014-09-11

申请号：US14285908

申请日：2014-05-23

Applicant: Apple Inc.

Inventor： Robert Novak ,  Mo-Han Fong ,  Hang Zhang ,  Sophie Vrzic

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0005 ,  H04L1/1812 ,  H04L1/1893 ,  H04L5/0044 ,  H04W52/34 ,  H04W52/48 ,  H04W72/04 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/12

Abstract: Various methods and systems are provided for allocating time-frequency resources for downlink (DL) and uplink (UL) communications between base stations and mobile stations. Different forms of resource allocation messages including combinations of bitmaps and bitfields provide additional information about the resources and/or how they are assigned. In some implementations the resource allocation messages enable reduced overhead, which may ultimately improve transmission rates and/or the quality of transmissions.

公开(公告)号：US20140080495A1

公开(公告)日：2014-03-20

申请号：US14083301

申请日：2013-11-18

Applicant: Apple Inc.

Inventor： Shalini Periyalwar ,  Hang Zhang ,  Nimal Senarath ,  Derek Yu ,  Kelvin Kar-Kin ,  Karl Mann

IPC: H04W72/04 ,  H04L29/08

CPC classification number: H04L67/1074 ,  H04L67/104 ,  H04W52/383 ,  H04W72/04 ,  H04W72/044

Abstract: Systems and methods are provided for delivering both PMP communications, for example standard cellular communications via a base station, and also delivering P2P communications, for example, communications between two mobile stations, using the same spectral resources for both types of communication.

Abstract translation: 提供了系统和方法，用于传送PMP通信，例如经由基站的标准蜂窝通信，以及使用相同的频谱资源为两种类型的通信提供P2P通信，例如两个移动站之间的通信。

公开(公告)号：US20130322399A1

公开(公告)日：2013-12-05

申请号：US13673289

申请日：2012-11-09

Applicant: Apple, Inc.

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

IPC: H04W36/18

CPC classification number: H04W36/18 ,  H04B7/022 ,  H04B7/0691

Abstract: Soft handoff in an OFDMA system is disclosed. If the pilot signal strength for a base station exceeds the defined threshold, the base station is added to an active set list. Subcarriers in a plurality of orthogonal frequency division multiplexing (OFDM) symbols are divided and allocated into subchannels. The OFDM symbols are divided and multiplexed. A soft handoff zone with a first dimension of the subchannels and a second dimension of the divided and multiplexed OFDM symbols is defined. The soft handoff zone has subcarriers with a subchannel definition, for example, an identical permutation.

Abstract translation: 披露了OFDMA系统中的软切换。 如果基站的导频信号强度超过定义的阈值，则将基站添加到活动集列表中。 多个正交频分复用（OFDM）符号中的子载波被划分并分配给子信道。 OFDM符号被分割和多路复用。 定义了具有子信道的第一维度和分割和多路复用的OFDM符号的第二维度的软切换区域。 软切换区具有子信道定义的子载波，例如相同的置换。

公开(公告)号：US20130301513A1

公开(公告)日：2013-11-14

申请号：US13944343

申请日：2013-07-17

Applicant: Apple Inc.

Inventor： Jianglei Ma ,  Aaron Callard ,  Ming Jia ,  Wen Tong ,  Peiying Zhu ,  Hang Zhang

IPC: H04W4/06 ,  H04B7/06

CPC classification number: H04W4/06 ,  H04B7/0413 ,  H04B7/0697 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0082 ,  H04W36/0005 ,  H04W36/30 ,  H04W72/005

Abstract: Systems and methods are disclosed herein for an enhanced Multimedia Broadcast Multicast Service (MBMS) in a wireless communications network. In one embodiment, a number of base stations in a MBMS zone, or broadcast region, accommodate both Spatial Multiplexing (SM) enabled user elements and non-SM enabled user elements. In another embodiment, a number of base stations form a MBMS zone, or broadcast region, where the MBMS zone is sub-divided into an SM zone and a non-SM zone. In another embodiment, the wireless communications network includes multiple MBMS zones. For each MBMS zone, base stations serving the MBMS zone transmit an MBMS zone identifier (ID) for the MBMS zone. The MBMS zone ID may be used by a user element for decoding and/or to determine when to perform a handoff from one MBMS zone to another.

Abstract translation: 这里公开了用于无线通信网络中的增强型多媒体广播多播服务（MBMS）的系统和方法。 在一个实施例中，MBMS区域或广播区域中的多个基站适应启用的空间复用（SM）用户元件和不启用SM的用户元件。 在另一个实施例中，多个基站形成MB​​MS区域或广播区域，其中MBMS区域被划分为SM区域和非SM区域。 在另一个实施例中，无线通信网络包括多个MBMS区域。 对于每个MBMS区域，服务于MBMS区域的基站发送MBMS区域的MBMS区域标识符（ID）。 MBMS区域ID可以由用户单元用于解码和/或确定何时执行从一个MBMS区域到另一个MBMS区域的切换。

公开(公告)号：US20130246784A1

公开(公告)日：2013-09-19

申请号：US13766519

申请日：2013-02-13

Applicant: Apple, Inc.

Inventor： Hang Zhang ,  Peiying Zhu ,  Mo-Han Fong ,  Wen Tong ,  Gamini Senarath ,  Derek Yu ,  David Steer

IPC: H04W12/02

CPC classification number: H04W12/02 ,  H04B7/155 ,  H04L63/0428 ,  H04L63/0464 ,  H04L63/0478 ,  H04W28/16 ,  H04W84/18 ,  H04W88/04 ,  H04W88/08

Abstract: Security in wireless communication networks that employ relay stations to facilitate communications between base stations and mobile stations is enhanced. In one embodiment, resource information provided to one or more relay stations from a base station or another relay station is encrypted prior to being delivered to the one or more relay stations. Only authorized relay stations are allocated an appropriate key necessary to decrypt the resource information. As such, only appropriate relay stations are able to access and use the resource information to effect communications directly or indirectly between the base stations and the mobile stations. In certain embodiments, the resource information is delivered between the various base and relay stations using either unicast or multicast delivery techniques.