Device Discovery, Session Setup, and Maintenance in IEEE 802.15.4ab Communications

    公开(公告)号:US20240106495A1

    公开(公告)日:2024-03-28

    申请号:US18472934

    申请日:2023-09-22

    Applicant: Apple Inc.

    CPC classification number: H04B1/7163 H04W8/005 H04W76/14

    Abstract: In order to eliminate the reliance of ultra-high bandwidth (UWB) standalone transceivers and narrow-band-assisted (NB-assisted) UWB transceivers on BLUETOOTH™ (BLE) usage, an NB radio may be used. The NB radio may be tightly coupled with the UWB radio, for example driven by the same time source, to enable leveraged use of ACP (Acquisition Packet) for discovery, session setup, and maintenance over UWB and/or NB-assisted UWB without the use of BLE. Rules for advertising ACP and scanning for ACP may be defined for two modes of operation. An ad-hoc discovery may be based on external acquisition triggers, while a managed discovery may be based on an ongoing discovery advertisement process. ACPs may thereby be transmitted over UWB and/or NB.

    ONE TO MANY RANGING TECHNIQUES
    4.
    发明申请

    公开(公告)号:US20210072373A1

    公开(公告)日:2021-03-11

    申请号:US16777631

    申请日:2020-01-30

    Applicant: Apple Inc.

    Abstract: A mobile device can include ranging circuitry to determine distance to another mobile device. A first wireless protocol can establish an initial communication session to perform authentication and/or exchange ranging settings. One mobile device acting as a beacon device can define a ranging round including an initial timeslot and a plurality of non-overlapping response slots for discovering and performing ranging with any mobile device in a vicinity of the beacon. The beacon can broadcast a ranging request including a beacon device identifier at a request time. A first mobile device can transmit a first acknowledgement message during a first response slot. A second mobile device can transmit a second acknowledgement message during a second response slot. The beacon device can calculate a first distance from the first mobile device and a second distance from the second mobile device based at least upon information in the first and second acknowledgement messages.

    Secure multicast/broadcast ranging

    公开(公告)号:US11879965B2

    公开(公告)日:2024-01-23

    申请号:US17821251

    申请日:2022-08-22

    Applicant: Apple Inc.

    CPC classification number: G01S13/765 H04W74/06

    Abstract: Methods performed by a first device. The methods include transmitting a first ranging poll to a plurality of second devices, receiving a polling response message from each of at least a first subset of the second devices, determining a propagation delay for each of the received polling response messages and determining a distance to each of the first subset of the second devices based on at least the respective propagation delays. The methods further include receiving a ranging poll from a second device, wherein the ranging poll is one of a multicast transmission or a broadcast transmission, determining a type of response to be transmitted to the second device based on at least a capability of the first device and transmitting a response of the determined type to the second device.

    CONTENTION-BASED DISCOVERY AND SECURE RANGING TECHNIQUES FOR CONGESTED ENVIRONMENTS

    公开(公告)号:US20230353365A1

    公开(公告)日:2023-11-02

    申请号:US17931072

    申请日:2022-09-09

    Applicant: APPLE INC.

    CPC classification number: H04L9/3226 H04L9/0825 H04L9/3297

    Abstract: A mobile device may receive a plurality of polling messages with each polling message including an identifier of a particular access device transmitting the polling message. Each polling message of the plurality of polling messages may be transmitted during a polling phase. The mobile device may select a timeslot of a response phase of a communication session. The mobile device may transmit a response message during the timeslot of the response phase. The mobile device may receive, during a third phase, an assignment message including an assigned timeslot for a response phase of a future session. The mobile device may perform secure ranging with one or more access devices of the plurality of access devices during the future session using the assigned timeslot. The mobile device may provide an access credential to the one or more access devices based on a location determined using the secure ranging.

    One to many ranging techniques
    7.
    发明授权

    公开(公告)号:US11796667B2

    公开(公告)日:2023-10-24

    申请号:US16777631

    申请日:2020-01-30

    Applicant: Apple Inc.

    CPC classification number: G01S13/765 G01S13/878

    Abstract: A mobile device can include ranging circuitry to determine distance to another mobile device. A first wireless protocol can establish an initial communication session to perform authentication and/or exchange ranging settings. One mobile device acting as a beacon device can define a ranging round including an initial timeslot and a plurality of non-overlapping response slots for discovering and performing ranging with any mobile device in a vicinity of the beacon. The beacon can broadcast a ranging request including a beacon device identifier at a request time. A first mobile device can transmit a first acknowledgement message during a first response slot. A second mobile device can transmit a second acknowledgement message during a second response slot. The beacon device can calculate a first distance from the first mobile device and a second distance from the second mobile device based at least upon information in the first and second acknowledgement messages.

    TECHNIQUES FOR SYNCHRONIZING ULTRA-WIDE BAND COMMUNICATIONS

    公开(公告)号:US20230062363A1

    公开(公告)日:2023-03-02

    申请号:US17647822

    申请日:2022-01-12

    Applicant: APPLE INC.

    Abstract: Techniques for ranging for a mobile device with one or more electronic devices using communication circuitry implementing a wireless protocol can include storing a schedule for a plurality of communication sessions. The technique can include broadcasting the advertising packets during a selected number of available time slots of a second time period, the advertising packets including information about the schedule for the plurality of communication sessions. After broadcasting an advertising packet during a selected time slot, the technique can include entering a reduced power state for the communication circuitry until a subsequent advertising packet is sent or a subsequent first time period for communicating the ranging packets as specified by the schedule. The technique can include exiting the reduced power state for the communication circuitry prior to the subsequent first time period. The technique can include transmitting a ranging packet via the wireless protocol according to the schedule.

    MANY TO MANY RANGING TECHNIQUES
    9.
    发明申请

    公开(公告)号:US20210076163A1

    公开(公告)日:2021-03-11

    申请号:US16784022

    申请日:2020-02-06

    Applicant: Apple Inc.

    Abstract: A mobile device can include ranging circuitry to determine distance to another mobile device. Ranging between multiple mobile devices can present challenges due to clock drift between the devices resulting in missed messages due to collisions between ranging messages. Techniques can be implemented to reduce the number of collisions by designating time slots for ranging sessions based on timing from a coordinator mobile device. Alternative techniques allow for splitting up channels at different time amount different pairs of devices. The ranging techniques can be used to share information between devices with a predefined distance for applications such as augmented reality.

    Long Range UWB and Wi-Fi Coexistence

    公开(公告)号:US20250089039A1

    公开(公告)日:2025-03-13

    申请号:US18825890

    申请日:2024-09-05

    Applicant: Apple Inc.

    Abstract: Apparatuses, systems, and methods for radio coexistence of a first radio with a first radio access technology (RAT) and a second radio with a second RAT, including systems, methods, and mechanisms for a wireless device to send a request message, from the first radio to the second radio to request a communication. The request message includes a request for the first radio to communicate in one or more frequency ranges that the second radio is configured to communicate on; a lead time for the first radio to start the communication in the one or more frequency ranges; a duration of time for the communication by the first radio; and one or more antennas of the UE for the first radio to use for the communication over the duration.

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