知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

178 records (took 0.03 seconds)

    Uplink control in a wireless communication network
    2.
    发明授权
    Uplink control in a wireless communication network 有权

    公开(公告)号：US11425713B2

    公开(公告)日：2022-08-23

    申请号：US16900954

    申请日：2020-06-14

    Applicant: Apple Inc.

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

    IPC: H04W4/00 ,  H04W72/04 ,  H04W74/00 ,  H04W74/08 ,  H04L5/00 ,  H04L27/26 ,  H04J11/00 ,  H04W84/12 ,  H04W88/08 ,  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.

    Communication of Control Information Using Alert Flag and Version Number
    3.
    发明申请
    Communication of Control Information Using Alert Flag and Version Number 有权

    公开(公告)号：US20220248389A1

    公开(公告)日：2022-08-04

    申请号：US17725795

    申请日：2022-04-21

    Applicant: Apple Inc.

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

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

    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.

    Dynamic Resource Allocation for Machine-Type Communication
    5.
    发明申请
    Dynamic Resource Allocation for Machine-Type Communication 有权

    公开(公告)号：US20210266118A1

    公开(公告)日：2021-08-26

    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

    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.

    Seamless mobility for 5G and LTE systems and devices
    7.
    发明授权
    Seamless mobility for 5G and LTE systems and devices 有权

    公开(公告)号：US11057814B2

    公开(公告)日：2021-07-06

    申请号：US16584651

    申请日：2019-09-26

    Applicant: Apple Inc.

    Inventor： Yujian Zhang ,  Mo-Han Fong ,  Pingping Zong ,  Alexei Davydov

    IPC: H04L12/24 ,  H04L5/14 ,  H04W84/18 ,  H04W36/18 ,  H04W36/08 ,  H04W36/00 ,  H04W36/30 ,  H04W36/38 ,  H04W84/04 ,  H04W36/32

    Abstract: User equipment (UE), an enhanced NodeB (eNB) and method of reducing handover latency are generally described. The UE may transmit measurement feedback to the eNB based on control signals. The UE may receive a reconfiguration message from the eNB or another eNB to the UE is attached. The reconfiguration message may contain reconfiguration information indicating whether or not a physical layer or layer 2 of the UE is to be reconfigured and/or a security key is to be updated. The reconfiguration information may be dependent on whether the handover is between eNBs controlled by a same entity and/or whether the handover comprises an intra-frequency transition. The UE or eNB may initiate handover of the UE. During handover the UE may avoid physical layer or layer 2 reconfiguration or the security key update. The security key and data for the UE may be provided directly between the eNBs.

    Methods and systems for OFDM using code division multiplexing
    8.
    发明授权
    Methods and systems for OFDM using code division multiplexing 有权

    公开(公告)号：US10862609B2

    公开(公告)日：2020-12-08

    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 ,  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.

    Efficient location updates, paging and short bursts
    9.
    发明授权
    Efficient location updates, paging and short bursts 有权

    公开(公告)号：US10701672B2

    公开(公告)日：2020-06-30

    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 ,  H04W74/08 ,  H04W72/00

    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.

Patent Agency Ranking