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    Tracking reference signals for new radio
    6.
    发明授权
    Tracking reference signals for new radio 有权

    公开(公告)号：US11324076B2

    公开(公告)日：2022-05-03

    申请号：US16473563

    申请日：2018-03-22

    Applicant: Apple Inc.

    Inventor： Gang Xiong ,  Ralf Bendlin ,  Alexei Davydov ,  Yushu Zhang ,  Sameer Pawar ,  Wook Bong Lee ,  Jong-Kae Fwu

    IPC: H04W88/06 ,  H04W76/27 ,  H04L5/00 ,  H04L5/14 ,  H04L27/26 ,  H04W56/00 ,  H04W68/00 ,  H04W72/04 ,  H04W74/08

    Abstract: Embodiments include apparatuses, methods, and systems that may be used in a UE in a mobile communication network to communicate with a gNB. An apparatus may include a memory and processing circuitry coupled with the memory. The processing in circuitry may cause coarse time and frequency synchronization information, obtained from primary and secondary synchronization signals (PSS/SSS), to be stored in the memory. Based on the coarse time and frequency synchronization information, the processing circuitry may decode a physical broadcast channel to obtain a first system information, and may acquire a second system information based on the first system information. Based on the first and second system information, the processing circuitry may cause a transmission of a PRACH, to trigger a transmission of a TRS by the gNB. Other embodiments may also be described and claimed.

    Device, system and method employing unified flexible 5G air interface
    7.
    发明授权
    Device, system and method employing unified flexible 5G air interface 有权

    公开(公告)号：US11317403B2

    公开(公告)日：2022-04-26

    申请号：US16742043

    申请日：2020-01-14

    Applicant: Apple Inc.

    Inventor： Jong-Kae Fwu ,  Gang Xiong

    IPC: H04W4/00 ,  H04W72/04 ,  H04W72/12 ,  H04L27/26 ,  H04L5/00 ,  H04W4/70 ,  H04W88/06 ,  H04W88/10 ,  H04L1/00 ,  H04W76/27 ,  H04W88/02

    Abstract: An eNodeB (eNB), user equipment (UE) and method of providing a flexible Radio Access Technology (FRAT) are generally described. The information (resource allocation, partition information and numerology) of at least one of a plurality of RATs used by the eNB is provided to a UE. Each RAT has a flexible subcarrier spacing and symbol duration, which are integer multiples of a base subcarrier spacing and symbol duration, and is associated with at least one of different temporal and frequency resources. The symbol and/or frame structure of each RAT are independent. A Transmission Time Interval (TTI) boundary between the RATs is common, and the RATs comprise a common reference TTI duration. The information of the RATs is provided either via a different RAT than the RAT used by the UE for communication or via a dedicated carrier in the RAT used by the UE for communication.

    FREQUENCY TRACKING FOR BEAMFORMED SYSTEMS
    8.
    发明申请
    FREQUENCY TRACKING FOR BEAMFORMED SYSTEMS 有权

    公开(公告)号：US20220085962A1

    公开(公告)日：2022-03-17

    申请号：US17531884

    申请日：2021-11-22

    Applicant: Apple Inc.

    Inventor： Peng Lu ,  Qiaoyang Ye ,  Gang Xiong ,  Glenn J. Bradford ,  Joonyoung Cho ,  Jong-Kae Fwu ,  Bishwarup Mondal

    IPC: H04L5/00 ,  H04J13/00 ,  H04L7/00

    Abstract: Systems, methods, and baseband processors are provided to generate or process symbols in a synchronization subframe. In one example, a method includes selecting non-consecutive orthogonal frequency division multiplexing (OFDM) symbols in a synchronization subframe. A transmitter is instructed to transmit demodulation reference symbols (DM-RS) on identical first sets of subcarriers in respective OFDM symbols of the selected non-consecutive OFDM symbols for a Physical Broadcast Channel (PBCH) using a same transmit beam, wherein a gap between two subcarriers in a respective set of the identical first sets of subcarriers is three subcarriers. The transmitter is instructed to transmit the PBCH on identical second sets of subcarriers in respective OFDM symbols in the selected non-consecutive OFDM symbols.

    Beamforming management in wireless networks
    9.
    发明申请
    Beamforming management in wireless networks 有权

    公开(公告)号：US20220006498A1

    公开(公告)日：2022-01-06

    申请号：US17480049

    申请日：2021-09-20

    Applicant: Apple Inc.

    Inventor： Yushu Zhang ,  Yuan Zhu ,  Gang Xiong ,  Ralf Bendlin ,  Jong-Kae Fwu

    IPC: H04B7/06 ,  H04B7/0408 ,  H04B7/0456 ,  H04L5/00

    Abstract: Apparatus, systems, and methods to implement receive beamforming in communication systems are described. In one example, apparatus of an evolved Node B (eNB) comprising processing circuitry to receive, from a user equipment (UE), a beamforming reference signal received power (BRS-RP) measurement and in response to the BRS-RP measurement, configure a downlink (DL) transmit (Tx) beamforming and a receiving (Rx) beamforming process on the UE. Other examples are also disclosed and claimed.

    Low overhead system information acquisition for wireless communication
    10.
    发明授权
    Low overhead system information acquisition for wireless communication 有权

    公开(公告)号：US11197235B2

    公开(公告)日：2021-12-07

    申请号：US16921272

    申请日：2020-07-06

    Applicant: Apple Inc.

    Inventor： Ralf Bendlin ,  Gang Xiong ,  Jong-Kae Fwu ,  Yujian Zhang

    IPC: H04W4/00 ,  H04W48/14 ,  H04W48/10 ,  H04W48/16 ,  H04W74/00

    Abstract: A method for low overhead system information acquisition (LOSIA) is disclosed. The LOSIA method includes several techniques for transmitting common channels in a next generation Radio Access Technology (xRAT). Instead of transmitting system information in a periodic, static, cell-specific, wideband manner, the transmission is triggered by user equipment in an “on demand” manner. The LOSIA method allows the network to control the overhead, bandwidth, and periodicity, as well as other characteristics. The LOSIA method employs several different techniques to trigger the information upon which the network can act, for example, by transmitting different payloads depending on the received trigger.

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