公开(公告)号：US09635616B2

公开(公告)日：2017-04-25

申请号：US15247570

申请日：2016-08-25

Applicant: Apple Inc.

Inventor： Shivesh Makharia ,  Sree Ram Kodali ,  Navid Damji ,  Thanigaivelu Elangovan ,  Luciano Verger ,  Madhusudan Chaudhary ,  Johnson O. Sebeni ,  Srinivasan Vasudevan ,  Samy Khay-Ibbat ,  Longda Xing ,  Jianxiong Shi

IPC: H04W52/02 ,  H04W76/04 ,  H04W72/04

CPC classification number: H04W52/028 ,  H04W52/0216 ,  H04W52/0229 ,  H04W72/04 ,  H04W72/0413 ,  H04W72/12 ,  H04W72/1289 ,  H04W76/28 ,  H04W88/02 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/23 ,  Y02D70/24

Abstract: A connection with a network that includes a base station (BS) may be established by a user device (UE) via a wireless connection, for conducting communications using semi persistent scheduling (SPS) in a connected discontinuous reception (C-DRX) mode. The SPS transmit periodicity may be adjusted with respect to the SPS activation command and the SPS interval UL (for uplink). Data may then be transmitted during the C-DRX On-Duration periods according to the determined SPS transmit periodicity. In some embodiments, the SPS transmit periodicity is adjusted such that following a first C-DRX On-Duration period when an SPS activation command is received, SPS data transmission occurs a specified number of subframes earlier during each subsequent C-DRX On-Duration period than in the first C-DRX On-Duration period. The SPS data transmission in each subsequent C-DRX On-Duration period may take place as soon as the UE device wakes up during the On-Duration period.

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。

公开(公告)号：US20140362830A1

公开(公告)日：2014-12-11

申请号：US14293494

申请日：2014-06-02

Applicant: Apple Inc.

Inventor： Luciano M. Verger ,  Madhusudan Chaudhary ,  Onur E. Tackin ,  Oren M. Elrad ,  Srinivasan Vasudevan ,  Thanigaivelu Elangovan ,  Tiange Shao

IPC: H04W56/00 ,  H04W36/00

CPC classification number: H04W56/003 ,  H04J3/0632 ,  H04L1/203 ,  H04L1/205 ,  H04L29/06027 ,  H04L65/80 ,  H04L67/322 ,  H04W36/0022 ,  H04W36/0072 ,  H04W36/0088 ,  H04W36/08 ,  H04W36/14

Abstract: A jitter buffer in a Voice over LTE receiver may be influenced by radio level feedback (RLF) from both local and remote endpoints to preemptively adjust the jitter buffer delay in anticipation of predicted future losses that have a high probability of occurring. The radio events of the RLF and the scenarios that trigger the preemptive adjustments may be identified, and their use may be expressed in terms of mathematical formulas. In prior art designs, the instantaneous jitter is derived from a weighted history of the media stream, and consequently only packets that have already arrived are used to compute the instantaneous jitter to adjust the length of the buffer. By providing and using RLF from both local and remote endpoints, the anticipated delay—for packets that have not yet arrived—may be used to preemptively adjust the buffer, thereby minimizing packet loss without introducing unnecessary delay.

Abstract translation: 在LTE语音接收机中的抖动缓冲器可能受来自本地和远端端点的无线电电平反馈（RLF）的影响，以预先考虑具有高概率发生的预测未来损耗的抖动缓冲器延迟。 可以识别RLF的无线电事件和触发抢先调整的场景，并且可以用数学公式来表示它们的使用。 在现有技术的设计中，瞬时抖动是从媒体流的加权历史导出的，因此只有已经到达的分组被用于计算瞬时抖动以调整缓冲器的长度。 通过从本地端点和远端端点提供和使用RLF，对于尚未到达的数据包，预期的延迟可能被用于抢先调整缓冲区，从而最大限度地减少数据包丢失而不引入不必要的延迟。

公开(公告)号：US08811421B2

公开(公告)日：2014-08-19

申请号：US14037269

申请日：2013-09-25

Applicant: Apple Inc.

Inventor： Li Su ,  Thanigaivelu Elangovan

IPC: H04W74/02

CPC classification number: H04W76/026 ,  H04W36/28 ,  H04W36/30 ,  H04W36/36 ,  H04W52/02 ,  H04W74/02 ,  H04W76/16 ,  H04W76/19 ,  H04W88/06 ,  H04W92/02 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/24

Abstract: Methods, apparatuses and computer readable media are described that configure wireless circuitry of a wireless communication device. The wireless communication device establishes a connection to a first wireless network using first and second receiving signaling chains. In response to detecting a radio frequency tune-away event, the wireless communication device reconfigures only one of the radio frequency signaling chains to receive signals from a second wireless network when a set of receive signal conditions for the second wireless network is satisfied. The wireless communication device reconfigures both of the radio frequency signaling chains to the second wireless network when the set of receive signal conditions is not satisfied.

Abstract translation: 描述了配置无线通信设备的无线电路的方法，设备和计算机可读介质。 无线通信设备使用第一和第二接收信令链建立到第一无线网络的连接。 响应于检测到无线电频率调谐事件，当满足第二无线网络的一组接收信号条件时，无线通信设备仅重新配置射频信号链中的一个以从第二无线网络接收信号。 当不满足接收信号条件的集合时，无线通信设备将两个无线电频率信令链重新配置到第二无线网络。

公开(公告)号：US20140073365A1

公开(公告)日：2014-03-13

申请号：US13622158

申请日：2012-09-18

Applicant: APPLE INC.

Inventor： Anish K. Goyal ,  Thanigaivelu Elangovan ,  Li Su ,  Jianxiong Shi

IPC: H04W68/00 ,  H04W4/14

CPC classification number: H04W4/14 ,  H04W4/16 ,  H04W68/005 ,  H04W76/34

Abstract: Performing wireless communication by a user equipment (UE) device communicating with a first wireless network and a second wireless network using a single radio. The UE device may receive a page message directed to the UE device from the first wireless network. In response to receiving the page message, the UE device may provide an extended service request (ESR) message to the second wireless network. After providing the ESR message, the UE device may respond to the page message on the first wireless network.

Abstract translation: 由使用单个无线电的第一无线网络和第二无线网络进行通信的用户设备（UE）进行无线通信。 UE设备可以从第一无线网络接收指向UE设备的寻呼消息。 响应于接收到寻呼消息，UE设备可以向第二无线网络提供扩展服务请求（ESR）消息。 在提供ESR消息之后，UE设备可以响应第一无线网络上的寻呼消息。