公开(公告)号：US20180310304A1

公开(公告)日：2018-10-25

申请号：US16021546

申请日：2018-06-28

Applicant: Apple Inc.

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

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04L1/00 ,  H04L25/02 ,  H04L29/06 ,  H04B7/12 ,  H04B7/06 ,  H04L1/06 ,  H04L1/18 ,  H04B7/02 ,  H04L25/03

CPC classification number: H04W72/0446 ,  H04B7/02 ,  H04B7/0669 ,  H04B7/12 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0071 ,  H04L1/0656 ,  H04L1/1812 ,  H04L1/1887 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0039 ,  H04L5/0041 ,  H04L5/0042 ,  H04L5/0046 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/006 ,  H04L5/0085 ,  H04L5/0096 ,  H04L25/0226 ,  H04L25/0228 ,  H04L25/03057 ,  H04L27/2627 ,  H04L27/2655 ,  H04L65/1066 ,  H04W72/0453

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：US09954715B2

公开(公告)日：2018-04-24

申请号：US15267396

申请日：2016-09-16

Applicant: APPLE INC.

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

IPC: H04L27/26 ,  H04B7/02 ,  H04L5/00 ,  H04W24/02 ,  H04B7/0452 ,  H04L7/04

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.

公开(公告)号：US20180069615A1

公开(公告)日：2018-03-08

申请号：US15796071

申请日：2017-10-27

Applicant: APPLE INC.

Inventor： Jianglei Ma ,  Ming Jia ,  Jianming Wu ,  Peiying Zhu ,  Wen Tong ,  Evelyne Le Strat ,  Sarah Boumendil ,  Moussa Abdi

IPC: H04B7/06

Abstract: Spatial multiplexing and transmit diversity can improve the capacity of a wireless communication system. The system and method adapts communication schemes for communication systems with multiple antennas utilizing at least two transmission modes. The at least two transmission modes can, but are not necessarily, used for uplink communications. The two transmission modes may be chosen from the group consisting of a single antenna mode, a diversity mode a spatial multiplexed mode and a mixed diversity and spatial multiplexed mode. The at least two transmission modes may involve adaptation among multiple transmitters. At least one receiver may indicate a transmission mode to be used by a transmitter for a subsequent transmission. A transmitter may determine a transmission mode to be used for a subsequent transmission. The transmission mode can be based on channel sounding.

公开(公告)号：US20180069614A1

公开(公告)日：2018-03-08

申请号：US15797138

申请日：2017-10-30

Applicant: APPLE INC

Inventor： Mahmoud Taherzadehboroujeni ,  Hosein Nikopour ,  Amir Khandani ,  Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Dong-Sheng Yu ,  Jianglei Ma

IPC: H04B7/06

CPC classification number: H04B7/0669 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/0606 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0668 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0028 ,  H04L27/2626

Abstract: Methods and devices are provided for MIMO OFDM transmitter and receivers having odd and/even numbers of transmit antennas. Various methods for pre-coding information bits before space time coding (STC) are described for enabling transmission of information bits over all antennas. Methods of decoding received signals that have been pre-coded and STC coded are also provided by embodiments of the invention. Pilot patterns for downlink and uplink transmission between a base station and one or more wireless terminals for three transmit antenna transmitters are also provided. Variable rate codes are provided that combine various fixed rate codes in a manner that results in codes whose rates are dependent on all the various fixed rate codes that are combined

公开(公告)号：US20180035266A1

公开(公告)日：2018-02-01

申请号：US15730111

申请日：2017-10-11

Applicant: Apple Inc.

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

IPC: H04W4/06 ,  H04B7/06 ,  H04W72/00 ,  H04W36/30

CPC classification number: H04W4/06 ,  H04B7/0413 ,  H04B7/0697 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0082 ,  H04W36/0007 ,  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.

公开(公告)号：US20180027558A1

公开(公告)日：2018-01-25

申请号：US15723310

申请日：2017-10-03

Applicant: Apple Inc.

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

IPC: H04W72/04 ,  H04W74/08 ,  H04W74/00 ,  H04L27/26 ,  H04L5/00 ,  H04J11/00 ,  H04W88/12 ,  H04W84/12 ,  H04W88/08

CPC classification number: H04W72/0446 ,  H04J11/00 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0055 ,  H04L27/2602 ,  H04W72/0413 ,  H04W72/042 ,  H04W74/004 ,  H04W74/0833 ,  H04W74/0866 ,  H04W84/12 ,  H04W88/085 ,  H04W88/12

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：US09843428B2

公开(公告)日：2017-12-12

申请号：US15463202

申请日：2017-03-20

Applicant: Apple Inc.

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

IPC: H04K1/10 ,  H04L5/00 ,  H04L27/26

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.

公开(公告)号：US20170353954A1

公开(公告)日：2017-12-07

申请号：US15681557

申请日：2017-08-21

Applicant: Apple Inc.

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

IPC: H04W72/04 ,  H04B7/12 ,  H04L1/00 ,  H04L5/00 ,  H04L25/02 ,  H04L29/06 ,  H04L27/26 ,  H04L1/06 ,  H04L1/18 ,  H04B7/06 ,  H04L25/03

CPC classification number: H04W72/0446 ,  H04B7/02 ,  H04B7/0669 ,  H04B7/12 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0071 ,  H04L1/0656 ,  H04L1/1812 ,  H04L1/1887 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0039 ,  H04L5/0041 ,  H04L5/0042 ,  H04L5/0046 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/006 ,  H04L5/0085 ,  H04L5/0096 ,  H04L25/0226 ,  H04L25/0228 ,  H04L25/03057 ,  H04L27/2627 ,  H04L27/2655 ,  H04L65/1066 ,  H04W72/0453

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：US09807573B2

公开(公告)日：2017-10-31

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 ,  H04W72/00 ,  H04B7/06 ,  H04W36/30

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.

公开(公告)号：US20170126347A1

公开(公告)日：2017-05-04

申请号：US15399028

申请日：2017-01-05

Applicant: Apple Inc.

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

IPC: H04J13/00 ,  H04L5/00 ,  H04B1/707

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.