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    DSDS Wi-Fi calling enhancements
    41.
    发明授权
    DSDS Wi-Fi calling enhancements 有权

    公开(公告)号：US11039297B1

    公开(公告)日：2021-06-15

    申请号：US16802139

    申请日：2020-02-26

    Applicant: Apple Inc.

    Inventor： Sweta B. Desai ,  Abhishek Walia ,  Ajoy K. Singh ,  Bhanu Prasad Pamidi ,  Rohit Thareja ,  Sharad Garg ,  Vijay Gadde ,  Vijendrakumar K. Ashiwal

    IPC: H04W36/00 ,  H04B1/38 ,  H04W8/18 ,  H04W88/06 ,  H04L29/06 ,  H04M7/00 ,  H04W4/16 ,  H04W48/18

    Abstract: Apparatuses, systems, and methods for enhancement of Wi-Fi calling for DSDS user equipment devices (UEs). The UE may register a first connection supported by a first SIM with IMS for VoWiFi based on a determination to prefer VoWiFi for the first SIM. The first SIM may be associated with a first subscription to a first RAN. The UE may include a second SIM that may be associated with a second subscription to a second RAN. The UE may register a second connection associated with the second SIM with the IMS for VoWiFi and/or VoLTE and initiate/receive, via the first connection supported by the first SIM, a VoWiFi call. A recommendation to handover the VoWiFi call from Wi-Fi to cellular data may be received and, based, at least in part, on the recommendation, the UE may register a second connection associated with the second SIM for IWLAN over cellular data.

    Fast Return to Wi-Fi
    43.
    发明申请
    Fast Return to Wi-Fi 审中-公开

    公开(公告)号：US20180332506A1

    公开(公告)日：2018-11-15

    申请号：US15593686

    申请日：2017-05-12

    Applicant: Apple Inc.

    Inventor： Venkateswara Rao Manepalli ,  Paul V. Flynn ,  Artiom Shamis ,  Thanigaivelu Elangovan ,  Vijay Venkataraman ,  Ajoy K. Singh ,  Veerendra Boodannavar

    IPC: H04W36/00 ,  H04W48/16

    CPC classification number: H04W36/0022 ,  H04W48/16 ,  H04W84/12 ,  H04W88/06

    Abstract: Embodiments for performing a fast return to Wi-Fi following completion of a cellular voice call are provided. These embodiments include detecting that a device has switched from communicating over a Wi-Fi interface to communicating over a cellular interface; determining the earliest time that the device can switch back to Wi-Fi; and instituting the switch. In some embodiments, the process of performing a fast return to Wi-Fi is carried out by devices having small form factors, such as smartwatches and other wearables, which may be susceptible to coexistence and peak power problems. The fast return to Wi-Fi embodiments disclosed herein allow a device to perform a voice call over a cellular interface when Wi-Fi calling is not available, and switch over to a Wi-Fi interface immediately upon completion of the voice call in order to conserve battery life, achieve higher data speeds, and avoid high costs associated with cellular data transmissions.

    Call Setup Techniques using WLAN Radio and Shared Cellular Radio
    46.
    发明申请
    Call Setup Techniques using WLAN Radio and Shared Cellular Radio 审中-公开

    公开(公告)号：US20170318502A1

    公开(公告)日：2017-11-02

    申请号：US15143217

    申请日：2016-04-29

    Applicant: Apple Inc.

    Inventor： Ajoy K. Singh ,  Prashant H. Vashi

    IPC: H04W36/00 ,  H04W76/02 ,  H04W76/06 ,  H04W36/30 ,  H04W84/12

    CPC classification number: H04W36/0022 ,  H04W36/0088 ,  H04W36/30 ,  H04W76/10 ,  H04W76/30 ,  H04W88/06

    Abstract: In some embodiments, a cellular baseband processor communicates wirelessly and reports cellular metrics for both a first cellular RAT and a second cellular RAT. The cellular baseband processor may be configured to tune away, for a time interval, from the first cellular RAT to monitor for communications on the second cellular RAT. In some embodiments, the cellular baseband processor is configured not to report cellular metrics during the time interval to prevent a RAT manager from setting up a connection for voice calls on a WLAN RAT during the time interval. In some embodiments another processing element the RAT manager is configured to ignore cellular metrics from the cellular baseband processor during the interval. This may reduce signal load and power consumption, in some embodiments.

    Avoiding conflicts between device-initiated handovers and network-initiated handovers
    47.
    发明授权
    Avoiding conflicts between device-initiated handovers and network-initiated handovers 有权

    公开(公告)号：US09749915B2

    公开(公告)日：2017-08-29

    申请号：US14607815

    申请日：2015-01-28

    Applicant: Apple Inc.

    Inventor： Ajoy K. Singh ,  Wen Zhao

    IPC: H04W36/04 ,  H04W36/00

    CPC classification number: H04W36/0083 ,  H04W36/0022

    Abstract: In some embodiments, a user equipment device (UE) implements techniques for avoiding conflicts between UE-initiated and network-initiated handovers. In one embodiment, one or more first radios are configured to perform cellular communication using different first and second cellular radio access technologies (RATs) and a second radio is configured to perform wireless communication using a short-range RAT. In one embodiment, the mobile device is configured to, while communicating using the first cellular RAT, in response to determining that an inter-RAT handover to the short-range RAT is likely to be initiated or has been initiated by the at least one processor, delay sending a measurement report to the cellular base station. This delay may avoid conflict between handovers initiated by the network in response to the measurement report (e.g., from the first cellular RAT to the second cellular RAT) and the inter-RAT handover.

    Dynamic backoff in Wi-Fi calling
    49.
    发明授权
    Dynamic backoff in Wi-Fi calling 有权
    Wi-Fi呼叫中的动态回退

    公开(公告)号：US09549337B2

    公开(公告)日：2017-01-17

    申请号：US14501870

    申请日：2014-09-30

    Applicant: Apple Inc.

    Inventor： Xiaowen Wang ,  Ajoy K. Singh ,  Wen Zhao ,  Shu Du ,  Kapil Chhabra ,  Rudy E. Rawlins

    IPC: H04W48/18 ,  H04W76/00 ,  H04W40/12 ,  H04W40/16 ,  H04W28/02 ,  H04W36/22 ,  H04W36/20 ,  H04W36/12 ,  H04W84/12 ,  H04W36/30 ,  H04W36/00 ,  H04W76/02 ,  H04W36/14

    CPC classification number: H04W28/0236 ,  H04W36/0022 ,  H04W36/14 ,  H04W36/20 ,  H04W36/30 ,  H04W40/12 ,  H04W40/16 ,  H04W48/18 ,  H04W76/10 ,  H04W84/12

    Abstract: In order to improve the quality of a telephone call communicated over a wireless local area network (WLAN), an electronic device (such as a cellular telephone) may obtain one or more performance metrics based on communication with another electronic device (such as an access point) via a connection in the WLAN. For example, the electronic device may receive the one or more performance metrics from the other electronic device and/or may determine the one or more performance metrics based on the performance of the communication. Then, the electronic device may compare the one or more performance metrics with an interference criterion. If the interference criterion is met, the electronic device may perform a remedial action, such as selectively discontinuing use of the WLAN to communicate the telephone call for a time interval. Otherwise, the electronic device may continue using the WLAN to communicate the telephone call.

    Abstract translation: 为了提高通过无线局域网（WLAN）传送的电话呼叫的质量，电子设备（诸如蜂窝电话）可以基于与另一电子设备（例如接入点）的通信获得一个或多个性能度量 点）通过WLAN中的连接。 例如，电子设备可以从其他电子设备接收一个或多个性能度量，和/或可以基于通信的性能来确定一个或多个性能度量。 然后，电子设备可以将一个或多个性能度量与干扰标准进行比较。 如果满足干扰标准，则电子设备可以执行补救动作，例如选择性地中断WLAN的使用以在一段时间间隔内传送电话呼叫。 否则，电子设备可以继续使用WLAN来通信电话呼叫。

    Link Quality Based Single Radio-Voice Call Continuity and Packet Scheduling for Voice over Long Term Evolution Communications
    50.
    发明申请
    Link Quality Based Single Radio-Voice Call Continuity and Packet Scheduling for Voice over Long Term Evolution Communications 审中-公开
    基于链路质量的单无线电语音呼叫连续性和长期演进通信语音的分组调度

    公开(公告)号：US20160353316A1

    公开(公告)日：2016-12-01

    申请号：US15096138

    申请日：2016-04-11

    Applicant: Apple Inc.

    Inventor： David Boettger ,  Tarik Tabet ,  Samy Khay-Ibbat ,  Farouk Belghoul ,  Ajoy K. Singh ,  Thanigaivelu Elangovan ,  Rafael L. Rivera-Barreto

    IPC: H04W28/02 ,  H04W36/00

    CPC classification number: H04W36/0066 ,  H04W36/0022 ,  H04W36/24 ,  H04W72/1221 ,  H04W72/1231 ,  H04W88/06

    Abstract: Wireless devices, networks and methods may operate to have a wireless device cause a base station to trigger voice call continuity handovers responsive to the quality of the cellular radio link in addition to the base station triggering such handovers based on location or mobility. Furthermore, wireless communication devices may also perform monitoring of multiple buffers operating within the wireless communication device and associated with different respective communication layers, in addition to monitoring the quality of the cellular radio link, to perform intelligent dropping/discarding and/or scheduling of packets at the wireless communications device. Any one or more of these features may improve the ability of the wireless communications device to achieve stated Voice over Long Term Evolution (VoLTE) performance benchmarks in the context of the realities of current VoLTE networks.

    Abstract translation: 除了基站基于位置或移动性触发这种切换之外，无线设备，网络和方法可以操作以使无线设备响应于蜂窝无线电链路的质量而使基站触发语音呼叫连续性切换。 此外，除了监视蜂窝无线电链路的质量之外，无线通信设备还可以对在无线通信设备内操作并且与不同的相应通信层相关联的多个缓冲器执行监视，以执行智能丢弃/丢弃和/或调度分组 在无线通信设备。 这些特征中的任何一个或多个可以提高无线通信设备在当前VoLTE网络的实际情况下实现所述语音长期演进（VoLTE）性能基准的能力。

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