公开(公告)号：US09629045B2

公开(公告)日：2017-04-18

申请号：US14697531

申请日：2015-04-27

Applicant: Apple Inc.

Inventor： Giri Prassad Deivasigamani ,  Venkatasubramanian Ramasamy ,  Sharad Garg ,  Srinivasan Vasudevan

IPC: H04W4/00 ,  H04W36/08 ,  H04W24/08 ,  H04W36/36 ,  H04W36/30

CPC classification number: H04W36/08 ,  H04W24/08 ,  H04W36/30 ,  H04W36/36 ,  H04W48/20 ,  H04W64/003

Abstract: A method and apparatus for fast cell selection by a mobile wireless device. The mobile wireless device detects when a first wireless cell fails a set of stored suitability criteria and searches for and locates a set of candidate wireless cells to associate with. The mobile wireless device measures at least one received signal metric for each candidate wireless cell in the set of candidate wireless cells. When a candidate cell in the set of candidate wireless cells is identically the first wireless cell, the mobile wireless device evaluates the suitability of the candidate wireless cell using the stored set of suitability criteria for the first wireless cell and the measured at least one received signal metric for the candidate wireless cell. The mobile wireless communication device associates with the candidate wireless cell when the candidate wireless cell meets the stored set of suitability criteria.

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：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：US08830892B2

公开(公告)日：2014-09-09

申请号：US13667814

申请日：2012-11-02

Applicant: Apple Inc.

Inventor： Chris Y. Chung ,  Wen Zhao ,  Luciano M. Verger ,  Hyeonkuk Jeong ,  Gang Lu ,  Srinivasan Vasudevan ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  James O. Normile

IPC: G08C17/00

CPC classification number: H04N7/15 ,  H04L12/1827 ,  H04L65/1069 ,  H04N5/23241 ,  H04N5/372 ,  H04W52/02 ,  H04W52/0209 ,  H04W52/0216 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/168 ,  Y02D70/24

Abstract: In video conferencing over a radio network, the radio equipment is a major power consumer especially in cellular networks such as LTE. In order to reduce the radio power consumption in video conferencing, it is important to introduce an enough radio inactive time. Several types of data buffering and bundling can be employed within a reasonable range of latency that doesn't significantly disrupt the real-time nature of video conferencing. In addition, the data transmission can be synchronized to the data reception in a controlled manner, which can result in an even longer radio inactive time and thus take advantage of radio power saving modes such as LTE C-DRX.

Abstract translation: 在无线电网络的视频会议中，无线电设备是主要的电力消费者，特别是在诸如LTE的蜂窝网络中。 为了降低视频会议中的无线电功耗，重要的是要引入足够的无线电时间。 几种类型的数据缓冲和捆绑可以在合理的延迟范围内使用，不会显着破坏视频会议的实时性质。 此外，可以以受控的方式将数据传输同步到数据接收，这可以导致更长的无线电时间，从而利用诸如LTE C-DRX之类的无线电节能模式。

公开(公告)号：US20140018075A1

公开(公告)日：2014-01-16

申请号：US13630496

申请日：2012-09-28

Applicant: APPLE INC.

Inventor： Luciano M. Verger ,  Srinivasan Vasudevan ,  Wen Zhao

IPC: H04W36/24

CPC classification number: H04W48/18 ,  H04W48/02

Abstract: A method and apparatus for forced cell/RAT reselection is disclosed. In one embodiment, a cellular mobile communication device may attempt to access a network through a serving cell. Responsive to determining that access to the network is barred through the serving cell, the mobile communication device may determine if another cell is available through which it may obtain access to the network. If another cell providing network access is available, the mobile communication device may force reselection from the serving cell to the new cell. If no other cell providing access to the network is available to the mobile communication device, a forced reselection of a radio access technology may be performed.

Abstract translation: 公开了一种用于强制小区/ RAT重选的方法和装置。 在一个实施例中，蜂窝移动通信设备可以尝试通过服务小区接入网络。 响应于确定通过服务小区对网络的访问被禁止，移动通信设备可以确定另一个小区是否可用，通过它可以获得对网络的访问。 如果提供网络访问的另一小区可用，则移动通信设备可以强制从服务小区到新小区的重新选择。 如果没有提供对网络的访问的其他小区可用于移动通信设备，则可以执行无线电接入技术的强制重选。

公开(公告)号：US11265839B2

公开(公告)日：2022-03-01

申请号：US17079232

申请日：2020-10-23

Applicant: Apple Inc.

Inventor： Rohit R. Matolia ,  Vijay Venkataraman ,  Alosious Pradeep Prabhakar ,  Lakshmi N. Kavuri ,  Srinivasan Vasudevan ,  Vijay Kumar Jha

IPC: H04W60/04 ,  H04W8/18 ,  H04W48/02 ,  H04W88/02

Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment device (UE) and/or cellular network to avoid invalidation of a subscriber identity module (SIM). A UE may initiate a connection with the network. The network may reject the connection attempt. The UE may selectively determine whether to invalidate the SIM, network, or both. The UE may consider various factors such as details of the connection rejection message, identity of the network, its relationship to the network (e.g., whether the network is a preferred network, etc.), a number of connection rejections received, time remaining on one or more timers, availability of other networks, etc.

公开(公告)号：US09854518B2

公开(公告)日：2017-12-26

申请号：US14498457

申请日：2014-09-26

Applicant: APPLE INC.

Inventor： Luciano Verger ,  Lalin Theverapperuma ,  Muhammad Alam ,  Giri Deivasigamani ,  Samy Khay-Ibbat ,  Srinivasan Vasudevan ,  Thanigaivelu Elangovan ,  Madhusudan Chaudhary ,  Navid Damji ,  Johnson Sebeni ,  Jianxiong Shi ,  Shivesh Makharia ,  Sree Kodali ,  Onur Tackin

IPC: H04W52/02 ,  H04W72/04 ,  H04W76/04 ,  H04L29/06 ,  G10L19/00 ,  H04W72/12

CPC classification number: H04W52/0216 ,  G10L19/00 ,  H04L65/602 ,  H04W72/0413 ,  H04W72/1284 ,  H04W76/28 ,  Y02D70/1262 ,  Y02D70/23 ,  Y02D70/24

Abstract: A station that generates data packets to be transmitted by the station such that the data packets spend a minimum amount of time in a buffer prior to transmission. The method includes receiving a specification for a connected discontinuous reception (C-DRX) cycle, the specification indicating when a plurality of onDurations of the C-DRX cycle occurs, the onDurations having a predetermined interval therebetween, receiving data at a known time relative to the C-DRX cycle, determining a modification to a conversion process that converts the data to data packets such that the data packets are stored in a buffer at a subframe immediately preceding one of the onDurations subsequent to the known time, performing the conversion process based upon the modification and storing the data packets at the subframe immediately preceding the one of the onDurations. In one embodiment, the data is raw audio data and the data packets are audio packets.

公开(公告)号：US20160353315A1

公开(公告)日：2016-12-01

申请号：US14724567

申请日：2015-05-28

Applicant: Apple Inc.

Inventor： Si Li ,  Deepak Chitlur Lakshman ,  Srinivasan Vasudevan

IPC: H04W28/02 ,  H04W24/04

CPC classification number: H04W24/04 ,  H04W28/0215 ,  H04W28/0252 ,  H04W28/0263

Abstract: A wireless voice call may be established between an originating user equipment (UE) and a terminating UE, via a cellular network, using preconditions. The originating UE may transmit an invitation for a packet-switched wireless voice call, beginning a first period of time. The terminating UE may cancel the invitation in response to determining that a first precondition, such as establishment of a dedicated bearer between the originating UE and the cellular network, is not satisfied within the first period of time. The first period of time may be interrupted in response to determining that the first precondition is satisfied, and a second period of time may then begin. The cellular network may cancel the invitation in response to determining that a second precondition, such as establishment of a dedicated bearer between the terminating UE and the cellular network, is not satisfied within the second period of time.

Abstract translation: 可以使用前提条件通过蜂窝网络在始发用户设备（UE）和终端UE之间建立无线语音呼叫。 始发UE可以在第一时间段开始发送分组交换无线语音呼叫的邀请。 响应于确定在第一时间段内不满足诸如始发UE和蜂窝网络之间的专用承载的建立的第一前提条件，终止UE可以取消邀请。 响应于确定第一前提条件得到满足，第一时间段可能被中断，然后可以开始第二时间段。 蜂窝网络可以响应于在第二时间段内确定第二前提条件，例如在终止UE和蜂窝网络之间的专用承载的建立不被满足而取消邀请。

公开(公告)号：US09445365B2

公开(公告)日：2016-09-13

申请号：US14153675

申请日：2014-01-13

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 ,  H04W72/12 ,  H04W88/02

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.

Abstract translation: 与包括基站（BS）的网络的连接可以由用户设备（UE）经由无线连接建立，用于使用在连续的不连续接收（C-DRX）模式中的半永久调度（SPS）进行通信。 可以相对于SPS激活命令和SPS间隔UL（对于上行链路）来调整SPS发送周期。 然后可以根据所确定的SPS发送周期在C-DRX持续时间周期期间发送数据。 在一些实施例中，调整SPS发送周期，使得在接收到SPS激活命令之后的第一C-DRX持续时间周期之后，SPS数据传输在每个随后的C-DRX持续时间段期间发生特定数量的子帧 比在第一个C-DRX持续时间段。 一旦UE设备在持续时间期间唤醒，可以在每个随后的C-DRX持续时间段中的SPS数据传输发生。

公开(公告)号：US09414315B2

公开(公告)日：2016-08-09

申请号：US14173478

申请日：2014-02-05

Applicant: Apple Inc.

Inventor： Navid Damji ,  Giri Prassad Deivasigamani ,  Johnson O. Sebeni ,  Luciano M. Verger ,  Madhusudan Chaudhary ,  Samy Khay-Ibbat ,  Sarma V. Vangala ,  Shivesh Makharia ,  Sree Ram Kodali ,  Srinivasan Vasudevan ,  Thanigaivelu Elangovan ,  Zhu Ji

IPC: G08C17/00 ,  H04W52/02

CPC classification number: H04W52/0235 ,  H04W52/0216 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/23 ,  Y02D70/24

Abstract: A method for reducing power consumption in connected mode discontinuous reception is disclosed. The method can include a wireless communication device sending a transmission for a pending HARQ retransmission process and receiving an ACK for the transmission. The method can further include the wireless communication device determining a subset of remaining uplink transmission opportunities in the pending HARQ retransmission process to monitor for an uplink grant in response to receiving the ACK and monitoring the subset of remaining uplink transmission opportunities for an uplink grant. The method can additionally include the wireless communication device entering a sleep state for any uplink transmission opportunities remaining in the pending HARQ retransmission process after monitoring the subset of remaining uplink transmission opportunities in an instance in which an uplink grant for the pending HARQ retransmission process is not received for any of the subset of remaining uplink transmission opportunities.

Abstract translation: 公开了一种用于降低连接模式不连续接收中的功耗的方法。 该方法可以包括无线通信设备发送用于待决HARQ重传过程的传输并且接收用于传输的ACK。 该方法还可以包括无线通信设备确定待决HARQ重传过程中的剩余上行链路传输机会的子集，以响应于接收到该ACK并监视用于上行链路授权的剩余上行链路传输机会的子集来监视上行链路许可。 该方法可以另外包括无线通信设备进入睡眠状态，用于在未决的HARQ重传过程中保持的任何上行链路传输机会之后监视剩余上行链路传输机会的子集，其中用于未决HARQ重传过程的上行链路许可不在 接收到剩余上行链路传输机会的任何子集。