公开(公告)号：US09888515B2

公开(公告)日：2018-02-06

申请号：US15148419

申请日：2016-05-06

Applicant: APPLE INC.

Inventor： Raj Chaugule ,  Sanjay Verma ,  Xuqiang Hua ,  Anish Goyal ,  Deepankar Bhattacharjee

IPC: H04W4/00 ,  H04W76/02 ,  H04W76/04 ,  H04L29/06 ,  H04W56/00 ,  H04W88/06

CPC classification number: H04W76/15 ,  H04L63/0272 ,  H04L63/164 ,  H04L65/1006 ,  H04L65/1016 ,  H04W36/00 ,  H04W56/001 ,  H04W76/27 ,  H04W88/06

Abstract: A device, system, and method synchronizes network states for a user equipment (UE) during a handover from a first network to a second network while the UE was in a radio resource control (RRC) idle state. The method includes determining whether a first context associated with a first non-default bearer over the first network is stored on the UE. The method includes when the first context is determined, determining a second context associated with a second non-default bearer over the second network is stored on the UE. The method includes transmitting a request to the first network over a default bearer for network state information relative to the first network. The method includes receiving the network state information from the first network, the network state information indicating that the UE does not have the first non-default bearer over the first network established. The method includes deleting the first context.

公开(公告)号：US20170064610A1

公开(公告)日：2017-03-02

申请号：US15016651

申请日：2016-02-05

Applicant: Apple Inc.

Inventor： Sarma V. Vangala ,  Tarik Tabet ,  Swaminathan Balakrishnan ,  Deepankar Bhattacharjee ,  Xiantao Sun

IPC: H04W48/10

CPC classification number: H04W48/10 ,  H04W84/042

Abstract: This disclosure relates to techniques for enabling a cellular network to more efficiently announce special network capabilities to UE's in its coverage area. The special network capabilities may be specific to a first class of UE devices and/or may be outside of the relevant telecommunication standard used by the cellular network. The base station may transmit a dummy System Information Block-1 (SIB-1), wherein the dummy system information block is broadcast separately from regular system information block 1's (SIB-1's).

Abstract translation: 本公开涉及使蜂窝网络能够更有效地向其覆盖区域中的UE公布特定网络能力的技术。 特殊网络能力可以是特定于第一类UE设备和/或可能在蜂窝网络使用的相关电信标准之外。 基站可以发送伪系统信息块-1（SIB-1），其中虚拟系统信息块与常规系统信息块1（SIB-1）分开广播。

公开(公告)号：US20150173009A1

公开(公告)日：2015-06-18

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

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.

Abstract translation: 在多载波环境中增强无线电链路性能的系统和方法。 一种方法可以由UE执行，该UE包括扫描主小区的多个载波分量，确定主小区的第一带宽，二次小区的扫描，确定次小区的第二带宽，确定最大聚合带宽 通过组合第一带宽和第二带宽，并且当最大聚合带宽超过UE的带宽能力时，执行小区选择过程以基于第一带宽和第二带宽中的较高者选择主小区或辅小区中的一个 带宽。

公开(公告)号：US20230088031A1

公开(公告)日：2023-03-23

申请号：US17947003

申请日：2022-09-16

Applicant: Apple Inc.

Inventor： Kai Zhang ,  Ajay Singh ,  Deepankar Bhattacharjee ,  Lele Cui ,  Lijie Zhang

IPC: H04W36/00 ,  H04W36/08

Abstract: A wireless network may include a PCELL base station, an SCELL base station, and user equipment (UE) that communicate using standalone carrier aggregation. The UE may receive PCELL signals during first measurement periods, may perform first measurements on the PCELL signals, may receive SCELL signals during second measurement periods, and may perform second measurements on the SCELL signals. When a scheduled reporting time approaches, the UE may compare a duration between a most recent of the second measurement periods and the reporting time to a threshold. If the duration is less than the threshold, the UE may include the most recent second measurement in a measurement report transmitted at the scheduled reporting time. When the duration exceeds the threshold, the receiver may perform a third measurement on the SCELL signals during an unscheduled period prior to the reporting time and may include the third measurement in the measurement report.

公开(公告)号：US20220322078A1

公开(公告)日：2022-10-06

申请号：US17438996

申请日：2020-10-15

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Dawei Zhang ,  Deepankar Bhattacharjee ,  Haijing Hu ,  Lele Cui ,  Lijie Zhang ,  Qiang Miao ,  Zhiwei Wang

IPC: H04W8/30 ,  H04W76/15 ,  H04W76/19

Abstract: This disclosure relates to techniques for performing wireless communications using a split bearer. A user equipment device may perform a recovery operation for a lost uplink packet. The recovery operation may be in response to an indication from the network or may be initiated autonomously by the device.

公开(公告)号：US11172410B2

公开(公告)日：2021-11-09

申请号：US15233517

申请日：2016-08-10

Applicant: APPLE INC.

Inventor： Prateek Sharma ,  Sanjay K. Verma ,  Deepankar Bhattacharjee ,  Sairam T. Gutta ,  Sreevalsan Vallath

IPC: H04W36/00 ,  H04W4/14

Abstract: An apparatus, method and system for receiving an input indicating a mode into which to set a user equipment (UE) and at least one further UE associated with the UE, determining whether a connection circuit switched (CS) connectivity or packet switched (PS) connectivity and when the connection is the CS connectivity, generating a short messaging service (SMS) message that indicates the mode corresponding to the input. Also, receiving connectivity information for a plurality of UEs from a cloud network component, the UEs being associated with one another, the connectivity being CS connectivity or PS connectivity, receiving a response indication corresponding to a response performed on an incoming call by a first one of the UEs, the first UE having a PS connectivity, matching the response indication to a corresponding cause code and transmitting the corresponding cause code to a second one of the UEs having a CS connectivity.

公开(公告)号：US20190104559A1

公开(公告)日：2019-04-04

申请号：US15995739

申请日：2018-06-01

Applicant: Apple Inc.

Inventor： Sanjay K. Verma ,  Deepankar Bhattacharjee ,  Prateek Sharma ,  Rohan C. Malthankar ,  Ajoy K. Singh ,  Najeeb M. Abdulrahiman

IPC: H04W76/15 ,  H04W76/14 ,  H04W76/23 ,  H04W88/04 ,  H04W48/16

Abstract: This disclosure relates to wireless connection management for an accessory device. A companion device and the accessory device may establish a wireless link. The companion device may associate with a Wi-Fi access point. The companion device may determine whether the Wi-Fi access point supports access by the accessory device to a wide area network. The companion device may determine whether to provide association information for the Wi-Fi access point to the accessory device based at least in part on whether the Wi-Fi access point supports access by the accessory device to the wide area network. The companion device may monitor whether the Wi-Fi access point continues to support access by the accessory device to the wide area network, and may indicate to the accessory device to disassociate with the Wi-Fi access point if the Wi-Fi access point no longer supports access by the accessory device to the wide area network.

公开(公告)号：US10225777B2

公开(公告)日：2019-03-05

申请号：US15166708

申请日：2016-05-27

Applicant: APPLE INC.

Inventor： Ajoy K. Singh ,  Deepankar Bhattacharjee ,  Raj S. Chaugule ,  Sanjay K. Verma ,  Kwangho Byun

IPC: H04W36/16 ,  H04W36/00 ,  H04W36/24 ,  H04W36/14 ,  H04W48/18 ,  H04W84/12

Abstract: A user equipment (UE), base station and a corresponding method for receiving historical data from a diagnostic server, receiving location data of the UE, determining a probability of a failed handover during a call based on the historical data and the location data, comparing the probability of the failed handover to a threshold value and initiating a call handover to a wireless local area network when the probability of the failed handover exceeds the threshold value. Also, a UE, base station and corresponding method for determining if one or more UEs have an active voice over WiFi call or if the UEs are registered with a Internet protocol (“IP”) multimedia subsystem (“IMS”) over WiFi and biasing a cell reselection procedure of the UE to select a cell of a packet switched network such as LTE.

公开(公告)号：US10142065B2

公开(公告)日：2018-11-27

申请号：US15160498

申请日：2016-05-20

Applicant: Apple Inc.

Inventor： Swaminathan Balakrishnan ,  Prateek Sharma ,  Deepankar Bhattacharjee ,  Sreevalsan Vallath

IPC: H04L1/20 ,  H04W36/00 ,  H04W48/12 ,  H04W36/04 ,  H04W36/30 ,  H04W84/04 ,  H04W48/20 ,  H04W88/06

Abstract: This disclosure relates to techniques for enabling a user equipment (UE) to determine which cell to attach to in a heterogeneous network (HetNet). The UE may determine, based on the quality of the downlink (DL) channel and/or on the type of traffic between the UE and a current base station, whether to attach to a small cell base station or an overlay macro base station in the cellular network. Particularly, the UE may determine whether to use a received mobility offset during cell reselection in response to a measured quality of the DL channel.

公开(公告)号：US10057939B2

公开(公告)日：2018-08-21

申请号：US14863214

申请日：2015-09-23

Applicant: Apple Inc.

Inventor： Prateek Sharma ,  Sanjay K. Verma ,  Deepankar Bhattacharjee ,  Sreevalsan Vallath

IPC: H04W76/28 ,  H04W76/25 ,  H04W76/38 ,  H04W4/16 ,  H04W76/04 ,  H04W76/06

CPC classification number: H04W76/28 ,  H04W4/16 ,  H04W76/25 ,  H04W76/38

Abstract: In some embodiments, a UE is configured to, in response to detecting an absence of received packets associated with a voice call over a first time interval of a pre-determined length, initiate transmission of a first control packet to a base station. In some embodiments, the UE is further configured, based on a response to the first control packet, not to drop the packet-switched voice call at least until expiration of a second time interval of a pre-determined length after transmission of the first control packet. In some embodiments, the absence of received packets is an absence of both voice and silence packets. In some embodiments, based on absence of a response to the first control packet, the UE is configured to drop the packet-switched call.