公开(公告)号：US11510245B2

公开(公告)日：2022-11-22

申请号：US17239339

申请日：2021-04-23

Applicant: Apple Inc.

Inventor： Yaranama Venkata Ramana Dass ,  Assaf Porat ,  Oren Shani ,  Venkateswara Rao Manepalli ,  Paul V. Flynn

IPC: H04W74/08 ,  H04W84/18 ,  G16Y40/10 ,  G16Y10/75

Abstract: An approach is described for a wireless device comprising a transceiver and a processor communicatively coupled to the transceiver. The processor is configured to detect a packet for transmission; scan, using the transceiver, a channel during an initial sliding window, the initial sliding window having N symbol durations; determine a power distribution of the initial sliding window based on the channel scan; determine that the channel is occupied during a first time period of the initial sliding window based at least on the power distribution; and determine a second sliding window having a second time period and a third time period. The second time period overlaps with the initial sliding window and a length of the third time period is determined based at least on the power distribution. The processor is further configured to scan, using the transceiver, the channel during the third time period; determine that the channel is idle during the third time period of the second sliding window; and transmit, using the transceiver, the packet to a second wireless device on the channel responsive to the third time period being idle.

公开(公告)号：US11356837B2

公开(公告)日：2022-06-07

申请号：US15592980

申请日：2017-05-11

Applicant: APPLE INC.

Inventor： Gahima S. Mbonye ,  Vijay Venkataraman ,  Srinivasan Nimmala ,  Thanigaivelu Elangovan ,  Abdul-Munem Ai-Khudairi ,  Anish K. Goyal ,  Rafael L. Rivera-Barreto ,  Yifan Zhu ,  Ryan Booth ,  Lakshmi Kavuri ,  Venkateswara Rao Manepalli

IPC: H04W8/02 ,  H04W48/16

Abstract: A method performed by a station that includes receiving information from a cell of a Public Land Mobile Network (PLMN), determining whether the information indicates the cell supports circuit switched fallback (CSFB) voice calls, when the CSFB voice calls are not supported, determining whether at least one packet switched voice property of the station satisfies a predetermined condition and attaching to the cell of the PLMN when the predetermined condition is satisfied. A further method performed by a station connected to a PLMN that includes identifying cells of the PLMN available for the station to camp on, determining whether the station is capable of executing packet switched calls, when the station is not capable of executing packet switched calls, determining whether the identified cells have a neighbor cell that supports CSFB voice calls and prioritizing the cells that are identified as having neighbor cells that support CSFB voice calls.

公开(公告)号：US10779175B2

公开(公告)日：2020-09-15

申请号：US16183535

申请日：2018-11-07

Applicant: APPLE INC.

Inventor： Venkateswara Rao Manepalli ,  Jianxiong Shi ,  Madhusudan Chaudhary ,  Srinivasan Nimmala ,  Murtaza A. Shikari ,  Srirang A. Lovlekar

IPC: H04W88/06 ,  H04W4/90 ,  G08B21/10 ,  H04W24/08 ,  H04W76/16 ,  G08B27/00 ,  H04W52/02 ,  H04W76/27 ,  H04B17/23 ,  H04W4/38 ,  H04W48/20 ,  G08B7/06 ,  G08B29/02

Abstract: A device, system, and method uses a camp only mode based on a connectivity status. The method is performed at a device that is configured to establish a first connection to a first network and configured to establish a second connection to a second network. The method includes determining the connectivity status of the device. When the connectivity status indicates that the device has established the first connection, the method includes utilizing a camp-only mode to monitor the second network, the camp-only mode reducing a frequency of at least one type of operation associated with the second network, the camp-only mode configured to retain a capability of determining whether an emergency message is being broadcast over the second network.

公开(公告)号：US10588170B2

公开(公告)日：2020-03-10

申请号：US15702978

申请日：2017-09-13

Applicant: Apple Inc.

Inventor： Daniel B. Pollack ,  Venkateswara Rao Manepalli ,  Yu Xing

IPC: H04W76/25 ,  H04W72/08 ,  H04B17/318 ,  H04L29/08 ,  H04W76/19 ,  H04L29/06 ,  H04L12/26

Abstract: A user equipment (UE) device and associated methods for entering a suspended baseband state in response to a signal strength indicator falling below a threshold. A UE engages in an active connection with a remote server, which may be a transmission control protocol (TCP) push connection. A baseband layer of the UE determines that the signal strength indicator has fallen below a threshold, and transmits a notification to an application layer of the UE to suspend the connection. The baseband layer may later determine that the signal strength has risen above a second threshold, whereby the UE may resume the suspended connection. The UE may maintain state information associated with the connection during the suspended state, such that the UE may resume the suspended connection without reestablishing a new connection with the remote server.

公开(公告)号：US10440174B2

公开(公告)日：2019-10-08

申请号：US15981339

申请日：2018-05-16

Applicant: Apple Inc.

Inventor： Andre M. Boule ,  Andrew M. Wadycki ,  Bor-rong Chen ,  Emily C. Schubert ,  Srinivasan Nimmala ,  Sunny K. Chow ,  Gunes Dervisoglu ,  Venkateswara Rao Manepalli ,  Vijay Kumar Ramamurthi ,  Anh N. Phan ,  Maulik V. Choksi ,  John D. Blackwell ,  Xiao Xiao ,  Xiaoyuan Tu ,  Hung A. Pham ,  Richard B. Warren ,  Ronald K. Huang

IPC: G08B21/00 ,  H04M1/725 ,  G01S19/52 ,  H04W84/12 ,  H04M1/663

Abstract: Systems, methods, and computer-readable media for managing or classifying movement states of an electronic device are provided that may utilize communications circuitry data from one or more communications circuitries when determining a current or future movement state of an electronic device.

公开(公告)号：US10313941B2

公开(公告)日：2019-06-04

申请号：US15177802

申请日：2016-06-09

Applicant: APPLE INC.

Inventor： Venkateswara Rao Manepalli ,  Lakshmi N. Kavuri ,  Madhusudan Chaudhary ,  Srinivasan Nimmala ,  Jianxiong Shi

IPC: H04W36/00 ,  H04W36/14 ,  H04W76/19 ,  H04W76/38 ,  H04W36/24 ,  H04W84/12 ,  H04W4/80

Abstract: Described herein are apparatus, systems and methods for improved mobility between wireless networks. A method may comprise, at a user equipment (“UE”) in communication with a cellular network activating a detach timer for the cellular network, detecting a short-range network, communicating with the short-range network, storing registration and bearer context data related to the cellular network, interrupting communication with the cellular network, and prior to the expiration of the detach timer, reconnecting to the cellular network via a service request without using an attach procedure.

公开(公告)号：US20190082393A1

公开(公告)日：2019-03-14

申请号：US15698723

申请日：2017-09-08

Applicant: Apple Inc.

Inventor： Srinivas Burugupalli ,  Venkateswara Rao Manepalli

IPC: H04W52/02 ,  H04W76/02 ,  H04W8/16 ,  H04W48/16 ,  H04W24/10 ,  H04W28/02

CPC classification number: H04W52/0261 ,  H04W4/80 ,  H04W8/16 ,  H04W24/10 ,  H04W28/0236 ,  H04W48/16 ,  H04W52/0245 ,  H04W60/04 ,  H04W76/19 ,  H04W88/04

Abstract: Systems, apparatuses, and methods for messaging improvements in link budget limited devices. A link budget limited device may be configured to suppress or delay tracking area update messages in various situations. Additionally, or alternatively, the link budget limited device may be configured to transition to idle mode instead of performing handover or recovery from radio link failure when the target base station has a signal quality less than a threshold. Additionally, or alternatively, the link budget limited device may be configured to suppress or delay measurement reports in poor signal quality conditions.

公开(公告)号：US10159045B2

公开(公告)日：2018-12-18

申请号：US15178206

申请日：2016-06-09

Applicant: Apple Inc.

Inventor： Arvind Swaminathan ,  Venkateswara Rao Manepalli ,  Lakshmi N. Kavuri

IPC: H04W36/24 ,  H04W36/28 ,  H04W52/02 ,  H04J11/00 ,  H04W36/00 ,  H04W64/00 ,  H04L12/857 ,  H04L12/26 ,  H04W36/14 ,  H04W88/06

Abstract: A wireless communication device may detect, within a specified time duration, at least a specified number of occurrences of a sequence of events, which includes the wireless communication device transitioning from a second cellular network operating according to a second radio access technology (RAT) to a first cellular network operating according to a first RAT, the wireless communication device failing to remain on the first cellular network for more than a specified time duration, and the wireless communication device returning from the first cellular network to the second cellular network. At least in response to this detection, the wireless communication device may determine whether to attempt future transition to the first cellular network while operating in the second network, based on one or more conditions, and/or may adjust one or more parameters used by the wireless communication device to determine when to redirect from the second cellular network to the first cellular network.

公开(公告)号：US20180352586A1

公开(公告)日：2018-12-06

申请号：US15702921

申请日：2017-09-13

Applicant: Apple Inc.

Inventor： Daniel B. Pollack ,  Yu Xing ,  Venkateswara Rao Manepalli

IPC: H04W76/04 ,  H04W76/06 ,  H04W52/02

CPC classification number: H04W76/25 ,  H04W52/0254 ,  H04W52/0261 ,  H04W76/38

Abstract: Methods and user equipment devices (UEs) are disclosed for performing keep alive interval fallback. During an active connection with a remote network, a UE may operate in a steady state configuration wherein keep alive message are periodically sent to the remote network. The UE may determine that a keep alive message has failed to receive an acknowledgement (ACK) response. Based on the determination that the keep alive message has failed, the UE may trigger keep alive interval fallback, wherein the UE sends keep alive messages at a shorter duration for a predetermined period of time.

公开(公告)号：US10142871B1

公开(公告)日：2018-11-27

申请号：US15595412

申请日：2017-05-15

Applicant: APPLE INC.

Inventor： Venkateswara Rao Manepalli ,  Jianxiong Shi ,  Madhusudan Chaudhary ,  Srinivasan Nimmala ,  Murtaza A. Shikari ,  Srirang A. Lovlekar

IPC: H04W24/08 ,  H04W4/38 ,  H04W76/16 ,  G08B7/06 ,  G08B29/02 ,  H04B17/23

Abstract: A device, system, and method uses a camp only mode based on a connectivity status. The method is performed at a device that is configured to establish a first connection to a first network and configured to establish a second connection to a second network. The method includes determining the connectivity status of the device. When the connectivity status indicates that the device has established the first connection, the method includes utilizing a camp-only mode to monitor the second network, the camp-only mode reducing a frequency of at least one type of operation associated with the second network, the camp-only mode configured to retain a capability of determining whether an emergency message is being broadcast over the second network.