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    DC Offset Cancelation for Wireless Communications
    53.
    发明申请
    DC Offset Cancelation for Wireless Communications 审中-公开

    公开(公告)号：US20170195147A1

    公开(公告)日：2017-07-06

    申请号：US15375245

    申请日：2016-12-12

    Applicant: Apple Inc.

    Inventor： Konstantinos Sarrigeorgidis ,  Tarik Tabet ,  Lydi Smaini

    IPC: H04L25/08 ,  H04L5/00

    Abstract: Techniques are disclosed relating to DC interference cancelation in received wireless signals. Disclosed techniques may be performed in the digital domain, in conjunction with analog cancelation techniques. In some embodiments, a receiver apparatus operates a local oscillator at a frequency corresponding to a particular pilot symbol in a received wireless signal. In some embodiments the receiver estimates DC interference at the frequency based on the received pilot symbol (this may be facilitated by the fact that the contents of pilot symbols are known, because they are typically used for channel estimation). In some embodiments, the receiver apparatus is configured to cancel the DC interference based on the estimate to determine received data in subsequently received signals at the frequency. Disclosed techniques may allow narrowband receivers to efficiently use more of their allocated frequency bandwidth, rather than wasting bandwidth near the frequency of the local oscillator.

    Electronic Devices with High and Low Linearity Receivers
    55.
    发明公开
    Electronic Devices with High and Low Linearity Receivers 审中-公开

    公开(公告)号：US20240147365A1

    公开(公告)日：2024-05-02

    申请号：US18474921

    申请日：2023-09-26

    Applicant: Apple Inc.

    Inventor： Wassim El-Hassan ,  Abhinav Dayal ,  Andrea Ruaro ,  Brian H. Bremer ,  Daphne I. Gorman ,  Lydi Smaini

    IPC: H04W52/02

    CPC classification number: H04W52/0229 ,  H04W52/0245

    Abstract: Electronic devices may be provided with wireless circuitry having an antenna, a primary receiver, and a secondary receiver. The primary receiver may be coupled to the antenna over a first signal path having a low noise amplifier. An input of the primary receiver may be coupled to the first signal path and an input of the secondary receiver may be coupled to a node on the first signal path over a second signal path. The primary receiver may consume more power and exhibit more linearity than the secondary receiver. The secondary receiver may wake while the primary receiver is asleep and may wake the primary receiver when paging signals are received. If desired, the wireless circuitry may be switched between a single-receiver mode and a receiver diversity mode based on wireless performance metric data gathered by the primary receiver and/or the secondary receiver.

    METHODS FOR MITIGATING COEXISTENCE OF UNCOORDINATED WIRELESS SYSTEMS VIA SIDELINK
    56.
    发明公开
    METHODS FOR MITIGATING COEXISTENCE OF UNCOORDINATED WIRELESS SYSTEMS VIA SIDELINK 审中-公开

    公开(公告)号：US20240089949A1

    公开(公告)日：2024-03-14

    申请号：US17932277

    申请日：2022-09-14

    Applicant: Apple Inc.

    Inventor： Anatoliy S. Ioffe ,  Lydi Smaini

    IPC: H04W72/12 ,  H04W64/00 ,  H04W76/10

    CPC classification number: H04W72/1215 ,  H04W64/003 ,  H04W76/10

    Abstract: User equipment may transmit and receive wireless signals to and from communication networks. However, in close proximity, transmission signals from a first user equipment may interfere with wireless signals received by a second user equipment. In certain instances, the user equipment may establish a session via peer-to-peer technologies and coordinate timing for communication with the networks. For example, the user equipment may establish a sidelink having a frequency different from a frequency used for communication with the networks. The user equipment may prioritize communication to a first communication network over a second communications network or vice versa. The user equipment may also designate a network connector and relay communication with the networks through the network connector. Additionally or alternatively, the user equipment may share the task of determining a global position. Accordingly, the user equipment may reduce or eliminate signal interference and preserve battery power.

    Discovery procedure for off grid radio service
    58.
    发明授权
    Discovery procedure for off grid radio service 有权

    公开(公告)号：US11540104B2

    公开(公告)日：2022-12-27

    申请号：US16850164

    申请日：2020-04-16

    Applicant: Apple Inc.

    Inventor： Tarik Tabet ,  Lydi Smaini ,  Ronald W. Dimpflmaier ,  Matthias Sauer ,  Venkateswara Rao Manepalli

    IPC: H04L67/04 ,  H04W4/80 ,  H04W8/00 ,  H04L67/1061 ,  H04W76/14 ,  H04W72/12 ,  H04L67/12 ,  H04W4/70

    Abstract: This disclosure relates to techniques for supporting narrowband device-to-device wireless communication, including possible techniques for performing discovery in an off grid radio system. A wireless device may obtain synchronization with a peer-to-peer communication group. The wireless device may determine the location of the wireless device within the peer-to-peer communication group based at least in part on signal strength of a synchronization signal used to obtain the synchronization. The wireless device may perform peer-to-peer discovery in the peer-to-peer communication group, such that time and frequency resources used by the wireless device to perform the peer-to-peer discovery are determined based at least in part on the location of the first wireless device within the peer-to-peer communication group.

    Device Category in 3GPP Communications
    59.
    发明申请
    Device Category in 3GPP Communications 有权

    公开(公告)号：US20220240127A1

    公开(公告)日：2022-07-28

    申请号：US17722033

    申请日：2022-04-15

    Applicant: Apple Inc.

    Inventor： Tarik Tabet ,  Awais M. Hussain ,  Lydi Smaini ,  Moustafa M. Elsayed ,  Syed Aon Mujtaba ,  Matthias Sauer ,  Ronald W. Dimpflmaier ,  Bernd W. Adler ,  Christian W. Mucke

    IPC: H04W28/24 ,  H04L5/00

    Abstract: A user equipment (UE) device may communicate according to a new device category satisfying specified QoS (quality of service) requirements while also satisfying specified link budget requirements, and/or additional optimization requirements. The UE device may communicate with a cellular base station according to a first mode of operation associated with the new device category, and may switch to communicating with the cellular base station according to a second mode of operation associated with a second (pre-existing) device category in response to the link budget requirements exceeding a specified value and the quality of service requirements not being sensitive. The UE device may also switch to communicating with the cellular base station according to a third mode of operation associated with a third (pre-existing) device type in response to the link budget requirement not exceeding the specified value, or the QoS requirements being sensitive and a downlink throughput requirement exceeding a specified throughput value.

    Control and shared channels in device-to-device communication
    60.
    发明授权
    Control and shared channels in device-to-device communication 有权

    公开(公告)号：US11166328B2

    公开(公告)日：2021-11-02

    申请号：US16106068

    申请日：2018-08-21

    Applicant: Apple Inc.

    Inventor： Tarik Tabet ,  Lydi Smaini ,  Ronald W. Dimpflmaier

    IPC: H04W76/14 ,  H04W56/00 ,  H04W74/00 ,  H04W8/00 ,  H04W72/12 ,  H04W72/02 ,  H04W92/18

    Abstract: This disclosure relates to techniques for supporting narrowband device-to-device wireless communication, including possible techniques for performing control and data communications between wireless devices that have performed discovery. A first device may transmit first control information to a second wireless device. The first control information may indicate a buffer status of the first wireless device. The first device may receive second control information from the second wireless device. The second control information may include an acknowledgement indication for the first control information. The first device may transmit a data communication to the second wireless device based at least in part on the first control information and the second control information.

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