公开(公告)号：US10805926B2

公开(公告)日：2020-10-13

申请号：US14671998

申请日：2015-03-27

Applicant: Apple Inc.

Inventor： Youn Hyoung Heo ,  Richard C. Burbidge ,  Hong He ,  Mo-Han Fong

IPC: H04W72/04 ,  H04W76/14 ,  H04W4/80 ,  H04W8/00 ,  H04W48/20 ,  H04L5/00

Abstract: A user equipment (UE) is configured to perform cell selection and camp on a first cell in a first frequency resource. The UE is configured to determine that proximity services are supported in a second frequency resource. The first and second wireless frequency resources are within licensed spectrums corresponding to one or more mobile communications networks. The UE is configured to start device-to-device communication on the second frequency resource and send, with the transceiver, a device-to-device message in the second frequency resource. The device-to-device message includes one of a device-to-device discovery message and a device-to-device communication message.

公开(公告)号：US10701624B2

公开(公告)日：2020-06-30

申请号：US16223409

申请日：2018-12-18

Applicant: APPLE INC.

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

IPC: H04W48/16 ,  H04L29/06 ,  H04W24/00 ,  H04W8/26 ,  H04W52/26 ,  H04W74/00

Abstract: A method for execution by a mobile station (MS) in a mobile communications network, the method comprising: receiving a first MS identifier from the network during a ranging operation involving the MS; using the first MS identifier to extract the contents of at least one message received from the network during said ranging operation; using a second MS identifier, different from the first MS identifier, to extract the contents of at least one message received from the network after said ranging operation is complete. Also, a method for execution by the base station, comprising: outputting a first message destined for the MS, the first message including a first identifier for use by the MS during a ranging operation; determining that said ranging operation is complete; outputting a second message destined for the MS, the second message including a second identifier for use by the MS in subsequent communication with the network.

公开(公告)号：US20200119827A1

公开(公告)日：2020-04-16

申请号：US16716845

申请日：2019-12-17

Applicant: Apple Inc.

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

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

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：US10470164B2

公开(公告)日：2019-11-05

申请号：US13784158

申请日：2013-03-04

Applicant: Apple Inc.

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

IPC: H04W72/04 ,  H04W72/00 ,  H04W74/00 ,  H04L12/18 ,  H04W4/08 ,  H04W48/10 ,  H04B7/0413 ,  H04L1/18 ,  H04L27/26 ,  H04L29/12 ,  H04L5/02

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：US10439784B2

公开(公告)日：2019-10-08

申请号：US15494804

申请日：2017-04-24

Applicant: APPLE INC.

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

IPC: H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04L27/26 ,  H04L9/08 ,  H04L9/30 ,  H04W12/02 ,  H04W12/00 ,  H04L1/00 ,  H04L1/06 ,  H04W12/04

Abstract: Systems and methods are provided for enabling H-ARQ communication between a base station and one or more wireless terminals. Methods for enabling incremental redundancy (IR) based H-ARQ, Chase based H-ARQ and Space-Time Code combining (STC) based H-ARQ between devices for down-link and up-link direction transmissions are provided in the form of an information element (IE) for use with a Normal MAP convention as currently accepted in the draft version standard of IEEE 802.16. In addition, embodiments of the invention provide a resource management scheme to protect a network from abuse of resources from a wireless terminal not registered with the network. Components of the down-link and up-link mapping components of a data frame transmitted from the base station to one or more wireless terminals included messages that are readable by all wireless terminals as well as some messages that are encrypted and only readable by wireless terminals that are authenticated as being registered with the network.

公开(公告)号：US20190254027A1

公开(公告)日：2019-08-15

申请号：US16391582

申请日：2019-04-23

Applicant: Apple Inc.

Inventor： Sophie Vrzic ,  Jun Yuan ,  Mo-Han Fong ,  Robert Novak ,  Dong-Sheng Yu ,  Jianglei Ma

IPC: H04W72/04 ,  H04J11/00 ,  H04L5/00 ,  H04L27/26 ,  H04W74/00 ,  H04W74/08

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.

公开(公告)号：US20190253190A1

公开(公告)日：2019-08-15

申请号：US16397152

申请日：2019-04-29

Applicant: APPLE INC.

Inventor： Robert Novak ,  Hang Zhang ,  Sophie Vrzic ,  Mo-Han Fong ,  Kelvin Kar-Kin Au ,  Jianglei Ma ,  Peiying Zhu ,  Wen Tong

IPC: H04L1/00 ,  H04L5/00 ,  H04L29/06 ,  H04L1/16 ,  H04L1/14 ,  H04L1/18

CPC classification number: H04L1/0067 ,  H04L1/0013 ,  H04L1/0025 ,  H04L1/14 ,  H04L1/1614 ,  H04L1/1867 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0042 ,  H04L5/0046 ,  H04L5/0064 ,  H04L29/06027 ,  H04L65/607 ,  H04L65/80 ,  H04L2001/0093

Abstract: Methods and systems are provided for allocating resources including VoIP (voice over Internet Protocol) and Non-VoIP resources. In some embodiments, multiplexing schemes are provided for use with OFDMA (orthogonal frequency division multiplexing access) systems, for example for use in transmitting VoIP traffic. In some embodiments, various HARQ (Hybrid Automatic request) techniques are provided for use with OFDMA systems. In various embodiments, there are provided methods and systems for dealing with issues such as Handling non-full rate vocoder frames, VoIP packet jitter handling, VoIP capacity increasing schemes, persistent and non-persistent assignment of resources in OFDMA systems.

公开(公告)号：US20190200338A1

公开(公告)日：2019-06-27

申请号：US16289902

申请日：2019-03-01

Applicant: Apple Inc.

Inventor： Mo-Han Fong ,  Hang Zhang ,  Sophie Vrzic ,  Robert Novak ,  Jun Yuan ,  Dong-Sheng Yu

IPC: H04W72/04 ,  H04W72/08 ,  H04L1/18 ,  H04L5/00 ,  H04W24/10 ,  H04W48/12

CPC classification number: H04W72/0406 ,  H04L1/1812 ,  H04L5/0055 ,  H04L5/0057 ,  H04W24/10 ,  H04W48/10 ,  H04W48/12 ,  H04W48/14 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/085 ,  H04W88/06

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.

公开(公告)号：US20190173722A1

公开(公告)日：2019-06-06

申请号：US16249672

申请日：2019-01-16

Applicant: APPLE INC.

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

IPC: H04L27/26 ,  H04L5/00 ,  H04B7/0452 ,  H04B7/02 ,  H04L7/04 ,  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.

公开(公告)号：US10284322B2

公开(公告)日：2019-05-07

申请号：US16031047

申请日：2018-07-10

Applicant: Apple Inc.

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

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