公开(公告)号：US11212697B2

公开(公告)日：2021-12-28

申请号：US16707696

申请日：2019-12-09

Applicant: Apple Inc.

Inventor： Faraz Faheem ,  Jianxiong Shi ,  Li Su ,  Sreevalsan Vallath ,  Yingjie Zhao ,  Yaoqi Yan ,  Jishan Gao

IPC: H04W28/02 ,  H04M15/00 ,  H04W24/08 ,  H04W76/10

Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment (UE) device to adaptively enhance the quality of service (QoS) configuration of a bearer of communications conducted over a cellular network between a UE application and a server. The UE may use various information, including a QoS profile associated with the application, to determine requested QoS parameters and/or whether the UE is permitted to request or access enhanced QoS functionality. The UE may then send a request to the cellular network indicating the requested QoS parameters, and the network may adjust the QoS configuration of the bearer in response. The UE and the network may perform routine QoS measurements and exchange information in order to adaptively maintain and optimize the QoS configuration. These techniques may tend to provide more appropriate QoS to the application, which may improve user experience.

公开(公告)号：US20210377983A1

公开(公告)日：2021-12-02

申请号：US16888555

申请日：2020-05-29

Applicant: Apple Inc.

Inventor： Ioannis Pefkianakis ,  Madhusudan Chaudhary ,  Swaminathan Balakrishnan ,  Muthukumaran Dhanapal ,  Lakshmi Kavuri ,  Thanigaivelu Elangovan ,  Ajoy K. Singh ,  Deepankar Bhattacharjee ,  Gaurav Pathak ,  Carola Faronius ,  Franco Travostino ,  Raghuveer Mallikarjun ,  Harshit Chuttani ,  Sreevalsan Vallath ,  Rajesh Ambati

IPC: H04W72/12 ,  H04W72/04 ,  H04L5/00 ,  H04W16/10 ,  H04W28/02 ,  H04L12/26

Abstract: A system and method for operation of a user equipment (UE) to determine a cellular network bottleneck in a downlink channel, and an apparatus for use in a UE for determining the same. A UE may determine a burst of network traffic from network traffic received from the cellular network during a series of transmission time intervals. The UE may analyze resource allocations to the UE during the burst to determine an extent to which the cellular network is busy. The UE may determine that the cellular network is experiencing a bottleneck based at least in part on the analysis of the resource allocations to the UE in the burst.

公开(公告)号：US10123372B2

公开(公告)日：2018-11-06

申请号：US15274038

申请日：2016-09-23

Applicant: APPLE INC.

Inventor： Prateek Sharma ,  Sreevalsan Vallath ,  Deepankar Bhattacharjee

IPC: H04L29/06 ,  H04W76/18 ,  H04W36/22 ,  H04W36/00

Abstract: Devices and methods for handling phone calls. One device is a user equipment (UE) configured to establish a connection with a first evolved Node B (eNB). A method includes transmitting an invite signal to a further UE for a Voice over LTE (VoLTE) call, receiving an accept signal from the further UE, receiving a fail signal from the first eNB that a dedicated bearer is unavailable, generating a trigger signal in response to receiving the fail signal and transmitting the trigger signal to the first eNB. Another device is a base station (e.g., eNB) that receives a VoLTE call request from a UE, determines whether the eNB has sufficient resources to provide a dedicated bearer. When it is determined the eNB has insufficient resources, the eNB determines whether a further eNB has sufficient resources to provide the dedicated bearer, and determines whether the UE can connect to the further eNB.

公开(公告)号：US09961007B2

公开(公告)日：2018-05-01

申请号：US15012680

申请日：2016-02-01

Applicant: Apple Inc.

Inventor： Samy Khay-Ibbat ,  Sarma V. Vangala ,  Sreevalsan Vallath ,  Tarik Tabet

IPC: H04L12/811 ,  H04L29/06 ,  H04W24/08 ,  H04W28/02

CPC classification number: H04L47/38 ,  H04L65/601 ,  H04L65/602 ,  H04L65/604 ,  H04L65/608 ,  H04L65/80 ,  H04W24/08 ,  H04W28/0236

Abstract: A method for initiating a codec rate change during a VoIP call by a wireless communication device is disclosed. The method can include the wireless communication device establishing a first codec rate for use in the VoIP call during a call establishment phase; using the first codec rate to encode voice data for transmission during a first portion of the VoIP call; determining a channel quality while using the first codec rate; determining that the channel quality satisfies a threshold for requesting a codec rate change; requesting a codec rate change from the first codec rate to a second codec rate in response to the channel quality satisfying the threshold; and using the second codec rate to encode voice data for transmission during a second portion of the VoIP call.

公开(公告)号：US09775110B2

公开(公告)日：2017-09-26

申请号：US14497148

申请日：2014-09-25

Applicant: Apple Inc.

Inventor： Sreevalsan Vallath ,  Carola Faronius

IPC: H04W52/02 ,  H04W24/02 ,  H04L29/06

CPC classification number: H04W52/0209 ,  H04L65/1006 ,  H04L65/607 ,  H04L65/80 ,  H04W24/02 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/23 ,  Y02D70/24 ,  Y02D70/25

Abstract: Methods and apparatus for reducing power consumption in a wireless device operating in a discontinuous transmission (DTX) mode while using a voice over Long Term Evolution (VoLTE) service. The wireless device detects a period of voice inactivity and transmits one or more silence descriptor (SID_UPDATE) frames to a second wireless device in place of encoded speech frames. The SID_UPDATE frames are transmitted periodically based on measurements of comfort noise parameters. The wireless device determines a difference between weighted averages of comfort noise (CN) parameters of two sequences of encoded speech frames. When the difference exceeds a difference threshold, a SID_UPDATE frame is transmitted. Additionally, in some embodiments, a SID_UPDATE frame is transmitted when the weighted average of CN parameters exceeds a parameter threshold and/or when a time between SID_UPDATE frames or time elapsed after entering a silence state exceeds one or more time thresholds.

公开(公告)号：US09686740B2

公开(公告)日：2017-06-20

申请号：US14536371

申请日：2014-11-07

Applicant: APPLE INC.

Inventor： Sreevalsan Vallath ,  Deepankar Bhattacharjee ,  Navid Damji ,  Christian W. Mucke ,  Rafael L. Rivera-Barreto ,  Tarik Tabet

IPC: H04W48/18 ,  H04L5/00 ,  H04W48/20

CPC classification number: H04W48/18 ,  H04L5/001 ,  H04W48/20

Abstract: Systems and methods that enhance radio link performance in a multi-carrier environment. A method may be performed by a UE that includes scanning a plurality of carrier components for a primary cell, determining a first bandwidth of the primary cell, scanning for a secondary cell, determining a second bandwidth of the secondary cell, determining a maximum aggregated bandwidth by combining the first bandwidth and the second bandwidth and when the maximum aggregated bandwidth exceeds a bandwidth capability of the UE, performing a cell selection procedure to select one of the primary cell or the secondary cell based on a higher of the first bandwidth and the second bandwidth.

公开(公告)号：US09635596B2

公开(公告)日：2017-04-25

申请号：US14944156

申请日：2015-11-17

Applicant: Apple Inc.

Inventor： Samy Khay-Ibbat ,  Sarma V. Vangala ,  Paul V. Flynn ,  Wen Zhao ,  Sreevalsan Vallath ,  Navid Damji

IPC: H04W36/30 ,  H04N7/14 ,  H04W36/14

CPC classification number: H04W36/30 ,  H04N7/147 ,  H04N7/148 ,  H04W36/14

Abstract: A method for transitioning a video call is provided. The method can include a wireless communication device participating in a video call with a remote communication device via a first video call session established over a connection between the wireless communication device and a first cellular network. The video call can include a packet switched video stream carried over a first bearer and an audio stream carried over a second bearer. The method can further include the wireless communication device determining a degradation in a connection quality for the first cellular network; transitioning to a legacy cellular network having a circuit switched domain in response to the degradation in connection quality for the first cellular network; establishing a second video call session on the legacy cellular network; and using the second video call session to continue the video call on the legacy cellular network.

公开(公告)号：US09526037B2

公开(公告)日：2016-12-20

申请号：US14168402

申请日：2014-01-30

Applicant: Apple Inc.

Inventor： Samy Khay-Ibbat ,  Sarma V. Vangala ,  Sreevalsan Vallath ,  Navid Damji ,  Luciano Miguel Verger ,  Srinivasan Vasudevan ,  Shivesh Makharia ,  Sree Ram Kodali ,  Madhusudan Chaudhary ,  Jianxiong Shi

IPC: H04W36/00 ,  H04L1/20 ,  H04L29/06 ,  H04J3/06 ,  H04W76/04

CPC classification number: H04W36/0022 ,  H04J3/0632 ,  H04L1/205 ,  H04L29/06027 ,  H04L29/06176 ,  H04L65/102 ,  H04W36/0066 ,  H04W76/22

Abstract: A method for providing indication of an SRVCC handover is disclosed. The method can include a first wireless communication device participating in a voice call with a second wireless communication device via a connection between the first wireless communication device and a first network. The method can further include the first wireless communication device determining a condition indicative of an impending SRVCC handover of the first wireless communication device from the first network to a legacy network. In response to the condition, the method can additionally include the first wireless communication device formatting a message including an indication that the first wireless communication device is going to perform the SRVCC handover and sending the message to the second wireless communication device prior to performance of the SRVCC handover.

Abstract translation: 公开了一种提供SRVCC切换指示的方法。 该方法可以包括经由第一无线通信设备和第一网络之间的连接与第二无线通信设备参与语音呼叫的第一无线通信设备。 该方法还可以包括第一无线通信设备确定指示第一无线通信设备从第一网络到遗留网络即将发生的SRVCC切换的条件。 响应于该条件，该方法可以另外包括第一无线通信设备格式化包括第一无线通信设备将要执行SRVCC切换的指示的消息，并且在执行所述第一无线通信设备之前将消息发送到第二无线通信设备 SRVCC切换。

公开(公告)号：US20150195737A1

公开(公告)日：2015-07-09

申请号：US14150928

申请日：2014-01-09

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Sarma V. Vangala ,  Samy Khay-Ibbat ,  Swaminathan Balakrishnan ,  Ajoy K. Singh ,  Sree Ram Kodali ,  Rafael Rivera-Barreto ,  S. Aon Mujtaba ,  Faraz Faheem ,  Sreevalsan Vallath

IPC: H04W28/02 ,  H04W28/08 ,  H04W72/04 ,  H04W24/08

CPC classification number: H04W24/08 ,  H04L43/0888 ,  H04L43/16 ,  H04W28/0236 ,  H04W28/0284 ,  H04W28/08 ,  H04W36/04 ,  H04W72/0486 ,  H04W72/085 ,  H04W88/02

Abstract: Estimating loading and potential available throughput a serving cell of a wireless user equipment (UE) device. Physical layer metrics of a channel on which the UE communicates with the serving cell may be measured. Cell utilization of the serving cell may be calculated based at least in part on the measured physical layer metrics. A maximum available throughput of the serving cell may be calculated based on the cell utilization.

Abstract translation: 估计无线用户设备（UE）设备的服务小区的负载和潜在可用吞吐量。 可以测量UE与服务小区通信的信道的物理层度量。 可以至少部分地基于所测量的物理层度量来计算服务小区的小区利用率。 可以基于小区利用率来计算服务小区的最大可用吞吐量。

公开(公告)号：US20140269624A1

公开(公告)日：2014-09-18

申请号：US13890026

申请日：2013-05-08

Applicant: APPLE INC.

Inventor： Samy Khay-Ibbat ,  Sarma V. Vangala ,  Sreevalsan Vallath ,  Tarik Tabet

IPC: H04W36/30

CPC classification number: H04W36/30 ,  H04W36/14

Abstract: A method for resuming a voice call on a legacy network is provided. The method can include a wireless communication device establishing a voice call with a remote device over a first cellular network; determining that a connection quality of the first cellular network has dropped below a threshold connection quality; sending a notification that the wireless communication device is releasing the voice call to transition to a legacy cellular network and will resume the voice call on the legacy cellular network; releasing the voice call on the first cellular network; transitioning to the legacy cellular network; establishing a second voice call with the remote device on the legacy cellular network; and using the second voice call to resume the voice call with the remote device.

Abstract translation: 提供了一种用于在传统网络上恢复语音呼叫的方法。 该方法可以包括通过第一蜂窝网络与远程设备建立语音呼叫的无线通信设备; 确定第一蜂窝网络的连接质量已经降到阈值连接质量以下; 发送无线通信设备正在释放语音呼叫以转换到传统蜂窝网络并将在传统蜂窝网络上恢复语音呼叫的通知; 在第一蜂窝网络上释放语音呼叫; 转移到传统蜂窝网络; 在传统蜂窝网络上与远程设备建立第二语音呼叫; 并使用第二语音呼叫来恢复与远程设备的语音呼叫。