公开(公告)号：US20130077469A1

公开(公告)日：2013-03-28

申请号：US13680209

申请日：2012-11-19

Applicant: APPLE INC.

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

IPC: H04W24/02

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-I 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。

公开(公告)号：US20130034075A1

公开(公告)日：2013-02-07

申请号：US13645027

申请日：2012-10-04

Applicant: Apple Inc.

Inventor： Hang Zang ,  Mo-Han Fong

IPC: H04W72/04

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.

公开(公告)号：US20130028170A1

公开(公告)日：2013-01-31

申请号：US13624505

申请日：2012-09-21

Applicant: Apple Inc.

Inventor： Shalini Periyalwar ,  Koon Hoo Teo ,  Mo-Han Fong ,  David Falconer

IPC: H04B7/14 ,  H04W72/04

CPC classification number: H04B7/15542

Abstract: Partner relay systems and methods are provided in which relaying is performed by a pair of partner relays. Signals received from a base station are translated by a first of the pair of partner relays to a different transmission resource for communication between the pair of partner relays, and then upon reception by a second of the pair of partner relays, the signal is translated back to the original transmission resource and re-transmitted towards the receiver.

Abstract translation: 提供合作伙伴中继系统和方法，其中中继由一对伙伴中继执行。 从基站接收到的信号由一对伙伴中继中的第一对转换成用于一对伙伴中继之间的通信的不同传输资源，然后在一对伙伴中继器的第二对接收时，信号被转回 到原始传输资源并且被重新发送到接收机。

公开(公告)号：US11581990B2

公开(公告)日：2023-02-14

申请号：US17319252

申请日：2021-05-13

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Pingping Zong ,  Yujian Zhang ,  Mo-Han Fong ,  Jong-Kae Fwu

IPC: H04L5/00 ,  H04W72/04 ,  H04W4/70 ,  H04W72/00 ,  H04L69/324 ,  H04W88/02

Abstract: Disclosed herein are apparatuses, systems, and methods using or implementing dynamic resource allocation (DRA) of resources for machine-type communication (MTC), as a secondary partition within a system bandwidth. Allocations outside the secondary partition are configured as a primary partition for other than MTC. Apparatuses may perform MTC communications within the secondary partition when DRA configuration information includes allocation information for the secondary partition and the apparatus is configured for MTC. Otherwise, if the apparatus is other than MTC, the apparatus may refrain from performing communications in the secondary partition. Other embodiments are described.

公开(公告)号：US11509431B2

公开(公告)日：2022-11-22

申请号：US16940286

申请日：2020-07-27

Applicant: Apple Inc.

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

IPC: H04L5/00 ,  H04L1/18 ,  H04W52/48 ,  H04W72/12 ,  H04W52/34 ,  H04W72/04

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：US11233725B2

公开(公告)日：2022-01-25

申请号：US15745890

申请日：2015-12-21

Applicant: APPLE INC.

Inventor： Yujian Zhang ,  Mo-Han Fong ,  Candy Yiu ,  Wey-Yi W. Guy ,  Umesh Phuyal ,  Youn Hyoung Heo

IPC: H04L12/707 ,  H04W28/08 ,  H04W80/02 ,  H04W28/02 ,  H04L12/801 ,  H04W88/06 ,  H04W36/00

Abstract: A network device (e.g., an evolved Node B (eNB), user equipment (UE) or the like) can operate to reduce an interruption time during a fallback operation resulting from a communication link blockage condition (e.g., a human blockage or other natural/physical wireless blockage). The network device includes a network convergence protocol (NCP) layer that enables communication between other network devices of different radio access technologies (RATs) in a heterogeneous network.

公开(公告)号：US10727989B2

公开(公告)日：2020-07-28

申请号：US16157413

申请日：2018-10-11

Applicant: Apple Inc.

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

IPC: H04L5/00 ,  H04L1/18 ,  H04W52/34 ,  H04W52/48 ,  H04W72/04 ,  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：US20200154433A1

公开(公告)日：2020-05-14

申请号：US16747156

申请日：2020-01-20

Applicant: Apple Inc.

Inventor： Hang Zhang ,  Jianglei Ma ,  Ming Jia ,  Sophie Vrzic ,  Mo-Han Fong ,  Dong-Sheng Yu ,  Hua Xu

IPC: H04W72/04 ,  H04L29/06 ,  H04L27/26 ,  H04L25/02 ,  H04L5/00 ,  H04L1/00 ,  H04B7/12

Abstract: Systems and methods for OFDM channelization are provided that allow for the coexistence of sub-band channels and diversity channels. Methods of defining diversity sub-channels and sub-band sub-channels are provided and systematic channel definition and labeling schemes are provided.

公开(公告)号：US10541773B2

公开(公告)日：2020-01-21

申请号：US16374147

申请日：2019-04-03

Applicant: Apple Inc.

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

IPC: H04J13/00 ,  H04B7/06 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04B1/707 ,  H04B7/0404 ,  H04W72/04 ,  H04J13/16 ,  H04L25/03

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.

公开(公告)号：US20190260513A1

公开(公告)日：2019-08-22

申请号：US16403207

申请日：2019-05-03

Applicant: Apple Inc.

Inventor： Robert Novak ,  Hosein Nikopourdeilami ,  Mo-Han Fong ,  Sophie Vrzic

IPC: H04L1/06 ,  H04L27/26 ,  H04L1/18 ,  H04L5/00 ,  H04B7/0456 ,  H04B7/06 ,  H04L1/00

Abstract: A method for transmitting data in a multiple-input-multiple-output space-time coded communication using a mapping table mapping a plurality of symbols defining the communication to respective antennae from amongst a plurality of transmission antennae and to at least one other transmission resource. The mapping table may comprise Alamouti-coded primary segments and may also comprise secondary segments, comprising primary segments. The primary segments in the secondary segments may be defined in accordance to an Alamouti based code pattern applied at the segment level to define a segment-level Alamouti based code.