SYSTEMS AND METHODS FOR MANAGING TRANSMISSION CONTROL PROTOCOL (TCP) ACKNOWLEDGEMENTS

    公开(公告)号:US20240129253A1

    公开(公告)日:2024-04-18

    申请号:US18397089

    申请日:2023-12-27

    Applicant: Apple Inc.

    CPC classification number: H04L47/323 H04L47/193 H04L47/2483

    Abstract: A client device in a wireless network accesses a queue comprising Transmission Control Protocol Acknowledgement (TCP ACK) packets. At least some packets include packet descriptors with a flow identifier indicating a corresponding TCP flow, and a TCP ACK Generation Count. The device inspects a packet descriptor of a first TCP ACK packet, and identifies a first flow identifier and a first TCP ACK Generation Count. The device accesses entries in a data structure that each includes a first field and a second field respectively storing a flow identifier and a TCP ACK Generation Count. The device determines that a condition is satisfied, comprising that an entry in the data structure includes a flow identifier and a TCP ACK Generation Count matching the first flow identifier and the first TCP ACK Generation Count, respectively. In response to the determination, the device marks the first TCP ACK packet to be dropped.

    Push notifications for multiple user devices

    公开(公告)号:US11095738B2

    公开(公告)日:2021-08-17

    申请号:US15627852

    申请日:2017-06-20

    Applicant: Apple Inc.

    Abstract: A server network accepts asynchronous notification messages from multiple application servers and efficiently routes notification messages in the form of notification taps to a user device, which can operate in a low power mode. The user device may or may not be a cellular device. The server network maintains states for the user devices in terms of identifiers useful for routing. A network server proximate to the user device registers the identifiers useful for routing the notifications. When the server network receives a notification from a source application, the proximate network server determines a routing based on the registration and sends a notification tap to the user device. The user device can obtain notification content sourced by the source application. The user device can delegate the role of receiving notification taps to a delegate device, where the delegate device may have wall-power and/or a wired or wireless network connection.

    SYSTEMS AND METHODS FOR MANAGING TRANSMISSION CONTROL PROTOCOL (TCP) ACKNOWLEDGEMENTS

    公开(公告)号:US20230023893A1

    公开(公告)日:2023-01-26

    申请号:US17851124

    申请日:2022-06-28

    Applicant: Apple Inc.

    Abstract: A client device in a wireless network accesses a queue comprising Transmission Control Protocol Acknowledgement (TCP ACK) packets, at least some of which include packet descriptors, each with a flow identifier indicating a TCP flow associated with the packet, and a TCP ACK Generation Count. The device inspects a packet descriptor of a first TCP ACK packet, and identifies a first flow identifier and a first TCP ACK Generation Count. The device accesses entries in a data structure that each includes a first field and a second field respectively storing a flow identifier and a TCP ACK Generation Count. The device determines that a first entry in the data structure includes a flow identifier and a TCP ACK Generation Count matching the first flow identifier and the first TCP ACK Generation Count, respectively. In response to the determination, the device marks the first TCP ACK packet to be dropped.

    Application Mobility Enhancements
    9.
    发明申请

    公开(公告)号:US20200383012A1

    公开(公告)日:2020-12-03

    申请号:US16834108

    申请日:2020-03-30

    Applicant: Apple Inc.

    Abstract: Apparatuses, systems, and methods for a wireless device to perform data stall mitigation. The wireless device may establish, at an HTTP layer of the wireless device, a data connection over a first network interface of the wireless device. The wireless device may compare an available duration of data in a data buffer associated with the data connection to a first threshold and notify, in response to the available duration approaching the first threshold, at least one lower layer of the wireless device of an emergency deadline. At least one lower layer may perform one or more remedial actions to avoid and/or mitigate a data stall.

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