公开(公告)号：US10681531B2

公开(公告)日：2020-06-09

申请号：US16001393

申请日：2018-06-06

Applicant: APPLE INC.

Inventor： Sriram Venkataramanan ,  Lakshmi N. Kavuri ,  Vijay Venkataraman ,  Sai Kiran Gummuluri ,  Yifan Zhu

IPC: H04W8/06 ,  H04W24/08 ,  H04W48/16 ,  H04W84/04

Abstract: A method performed by a user equipment (UE) connected to a first home cell of a home public land mobile network (HPLMN). The method includes determining a type of the first home cell, when the type is a first type, determining a first quality of the connection to the first home cell, in response to the first quality not satisfying a first predetermined threshold or a determination that the type is a second type, disconnecting from the HPLMN, connecting to a first visited cell of a visited public land mobile network (VPLMN), determining a second quality of the connection to the first visited cell and when the second quality of the connection to the first visited cell is above a second predetermined threshold, performing a data exchange via the first visited cell.

公开(公告)号：US10609600B2

公开(公告)日：2020-03-31

申请号：US16372263

申请日：2019-04-01

Applicant: Apple Inc.

Inventor： Jianxiong Shi ,  Lakshmi N. Kavuri ,  Madhusudan Chaudhary ,  Thanigaivelu Elangovan ,  Viswanath Nagarajan ,  Yifan Zhu

IPC: H04W36/00 ,  H04J11/00 ,  H04W36/32 ,  H04W36/36 ,  H04W48/16 ,  H04W48/18

Abstract: Apparatuses, systems, and methods for user equipment (UE) devices to perform more efficient frequency scans for potential base stations. According to techniques described herein, the UE may determine that it does not have cellular service and determine first information based on a last camped cell. A time period during which the first information was acquired may be determined and one or more frequency scans may be performed. The frequency scans may be limited to a set of frequencies based in part on the time period. Thus, if the time period is less than a first value, the set of frequencies may include a first set of frequencies and if the time period is greater than the first value but less than a second value, the set of frequencies may include the first set of frequencies and a second set of frequencies.

公开(公告)号：US10182337B2

公开(公告)日：2019-01-15

申请号：US15894180

申请日：2018-02-12

Applicant: Apple Inc.

Inventor： Sindhu Sivasankaran Nair ,  Tahir Shamim ,  Gaurav Arya ,  Thanigaivelu Elangovan ,  Lakshmi N. Kavuri

IPC: H04W8/00 ,  H04W64/00 ,  H04W48/16 ,  H04W8/18 ,  H04W76/19 ,  H04W8/22 ,  H04W48/08

Abstract: This disclosure relates to out of service recovery techniques for an accessory device. According to some embodiments, the accessory device may receive cellular communication system selection information from a paired device. The accessory device may store the communication system selection information. At some point, it may be determined that the accessory device has lost cellular communication service. The accessory device may perform a cellular communication service scan utilizing the system selection information received from the paired device along with its own historical information and location based frequency lists.

公开(公告)号：US09930717B2

公开(公告)日：2018-03-27

申请号：US15174555

申请日：2016-06-06

Applicant: Apple Inc.

Inventor： Sindhu Sivasankaran Nair ,  Tahir Shamim ,  Gaurav Arya ,  Thanigaivelu Elangovan ,  Lakshmi N. Kavuri

IPC: H04W76/02 ,  H04W8/00

CPC classification number: H04W8/005 ,  H04W8/183 ,  H04W8/22 ,  H04W48/08 ,  H04W48/16 ,  H04W64/00 ,  H04W76/19

Abstract: This disclosure relates to out of service recovery techniques for an accessory device. According to some embodiments, the accessory device may receive cellular communication system selection information from a paired device. The accessory device may store the communication system selection information. At some point, it may be determined that the accessory device has lost cellular communication service. The accessory device may perform a cellular communication service scan utilizing the system selection information received from the paired device along with its own historical information and location based frequency lists.

公开(公告)号：US20180063751A1

公开(公告)日：2018-03-01

申请号：US15590127

申请日：2017-05-09

Applicant: Apple Inc.

Inventor： Jianxiong Shi ,  Lakshmi N. Kavuri ,  Madhusudan Chaudhary ,  Thanigaivelu Elangovan ,  Viswanath Nagarajan ,  Yifan Zhu

IPC: H04W36/00 ,  H04W48/18 ,  H04J11/00 ,  H04W48/16 ,  H04W36/32 ,  H04W36/36

CPC classification number: H04W36/0005 ,  H04J11/0069 ,  H04W36/0088 ,  H04W36/32 ,  H04W36/36 ,  H04W48/16 ,  H04W48/18

Abstract: Apparatuses, systems, and methods for user equipment (UE) devices to perform more efficient frequency scans for potential base stations. According to techniques described herein, the UE may determine that it does not have cellular service and determine first information based on a last camped cell. A time period during which the first information was acquired may be determined and one or more frequency scans may be performed. The frequency scans may be limited to a set of frequencies based in part on the time period. Thus, if the time period is less than a first value, the set of frequencies may include a first set of frequencies and if the time period is greater than the first value but less than a second value, the set of frequencies may include the first set of frequencies and a second set of frequencies.

公开(公告)号：US09807661B1

公开(公告)日：2017-10-31

申请号：US15174616

申请日：2016-06-06

Applicant: Apple Inc.

Inventor： Venkateswara Rao Manepalli ,  Vijay Kumar Ramamurthi ,  Srirang A. Lovlekar ,  Lakshmi N. Kavuri ,  Thanigaivelu Elangovan ,  Jianxiong Shi ,  Vijay Venkataraman ,  Madhusudan Chaudhary ,  Srinivasan Nimmala ,  Srinivas Burugupalli

IPC: H04W36/24 ,  H04W4/00 ,  H04W52/02

CPC classification number: H04W36/245 ,  H04W4/80 ,  H04W24/08 ,  H04W52/0258 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/168 ,  Y02D70/24 ,  Y02D70/26

Abstract: This disclosure relates to cellular service recovery techniques using cell-specific cellular service history information for an accessory device. According to some embodiments, cellular service history information relating to cellular service loss occasions for each of one or more cells from which the accessory device has previously lost cellular service may be stored. It may be determined that cellular service loss is currently occurring from a cell for which cellular service history information relating to cellular service loss occasions is stored. Cellular service recovery may be attempted using the cellular service history information relating to cellular service loss occasions for the cell from which the current cellular service loss is occurring.