公开(公告)号：US12213067B2

公开(公告)日：2025-01-28

申请号：US18421584

申请日：2024-01-24

Applicant: Apple Inc.

Inventor： Junzhen Qin ,  Wen Zhao ,  Lijie Zhang ,  Lele Cui ,  Wenping Lou ,  Qiang Miao ,  Zhiwei Wang ,  Ying Zhang ,  Deepankar Bhattacharjee ,  Kexin Ma ,  Alex Yee Kit Ho

IPC: H04W48/18 ,  H04B17/318 ,  H04W48/14 ,  H04W88/10

Abstract: This disclosure relates to techniques for multi-RAT and DSDA capable wireless devices to handle frame blanking in a wireless communication system. A wireless device may establish wireless links according to a first radio access technology and a second radio access technology. The wireless device may determine to perform transmit and receive blanking for one or more antennas of the wireless device for the first radio access technology to perform sounding reference signal transmissions for the second radio access technology based at least in part on a band combination for the wireless links. The wireless device may determine a modification to channel state feedback reporting for the first radio access technology based at least in part on the transmit and receive blanking. The wireless device may perform channel state feedback reporting using the determined modification.

公开(公告)号：US11659402B2

公开(公告)日：2023-05-23

申请号：US16816049

申请日：2020-03-11

Applicant: Apple Inc.

Inventor： Deepankar Bhattacharjee ,  Prateek Sharma ,  Farouk Belghoul ,  Dawei Zhang ,  Haitong Sun ,  Wei Zeng ,  Sreevalsan Vallath

IPC: H04W16/14 ,  H04W72/04 ,  H04W74/08 ,  H04W84/12 ,  H04W24/04 ,  H04W72/0446

CPC classification number: H04W16/14 ,  H04W72/0446 ,  H04W74/0808 ,  H04W84/12

Abstract: This disclosure relates to providing a reservation signal for cellular communication in unlicensed spectrum. A cellular base station may perform a listen-before-talk procedure on an unlicensed frequency channel. The cellular base station may transmit a reservation signal on the unlicensed frequency channel after successfully performing the listen-before-talk procedure. The cellular base station may perform carrier sensing on the unlicensed frequency channel at least once during the duration of the reservation signal. The cellular base station may perform cellular communication on the unlicensed frequency channel after ceasing transmitting the reservation signal.

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：US09807673B2

公开(公告)日：2017-10-31

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 ,  H04W84/04

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).

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：US11917532B2

公开(公告)日：2024-02-27

申请号：US17481262

申请日：2021-09-21

Applicant: Apple Inc.

Inventor： Junzhen Qin ,  Wen Zhao ,  Lijie Zhang ,  Lele Cui ,  Wenping Lou ,  Qiang Miao ,  Zhiwei Wang ,  Ying Zhang ,  Deepankar Bhattacharjee ,  Kexin Ma ,  Alex Yee Kit Ho

IPC: H04W48/18 ,  H04B17/318 ,  H04W48/14 ,  H04W88/10

CPC classification number: H04W48/18 ,  H04B17/318 ,  H04W48/14 ,  H04W88/10

Abstract: This disclosure relates to techniques for multi-RAT and DSDA capable wireless devices to handle frame blanking in a wireless communication system. A wireless device may establish wireless links according to a first radio access technology and a second radio access technology. The wireless device may determine to perform transmit and receive blanking for one or more antennas of the wireless device for the first radio access technology to perform sounding reference signal transmissions for the second radio access technology based at least in part on a band combination for the wireless links. The wireless device may determine a modification to channel state feedback reporting for the first radio access technology based at least in part on the transmit and receive blanking. The wireless device may perform channel state feedback reporting using the determined modification.

公开(公告)号：US20220217577A1

公开(公告)日：2022-07-07

申请号：US17567743

申请日：2022-01-03

Applicant: Apple Inc.

Inventor： Ioannis Pefkianakis ,  Madhusudan Chaudhary ,  Muthukumaran Dhanapal ,  Lakshmi N. Kavuri ,  Thanigaivelu Elangovan ,  Ajay Singh ,  Deepankar Bhattacharjee ,  Gaurav Pathak ,  Carola Faronius ,  Franco Travostino ,  Raghuveer Mallikarjunan ,  Harshit Chuttani ,  Sreevalsan Vallath ,  Rajesh Ambati ,  Jia Tang ,  Ishwinder Singh

IPC: H04W28/02 ,  H04W24/08 ,  H04W36/14 ,  H04W36/22

Abstract: A user equipment (UE) passively determines the presence of a cellular network bottleneck in a downlink channel and may take appropriate actions to mitigate the bottleneck. The UE may analyze the transport block size (TBS) of slots of received downlink traffic and assign states the to various slots based on this analysis. Based on these assigned states, the UE may identify a burst of network traffic from network traffic received from the cellular network, and the UE may also determine the burst duration as well as a busy estimation. The UE may determine that the cellular network is experiencing a bottleneck based at least in part on the burst duration and the busy estimation.

公开(公告)号：US20180091655A1

公开(公告)日：2018-03-29

申请号：US15274265

申请日：2016-09-23

Applicant: APPLE INC.

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

IPC: H04M3/58 ,  H04W4/02

CPC classification number: H04M3/58 ,  H04M2203/2094 ,  H04M2203/6081 ,  H04W4/023

Abstract: Method, device, and system being performed by a first station. The method includes receiving a first call identification of a first communication session between the first station and a second station. The method further includes receiving a request, from a third station, to allow the first communication session to be transferred from the first station to the third station. Following the receipt of the request, the method includes displaying a prompt on the first station for permission to allow the first communication session to be transferred to the third station and, when the permission is received, transmitting a response, to the third station, granting permission to transfer the first communication session from the first station to the third station. Additionally, upon the call being transferred, an advisory, such as an audio or visual message, may alert the second client station of the call transfer event.

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.