公开(公告)号：US11864257B2

公开(公告)日：2024-01-02

申请号：US17448788

申请日：2021-09-24

Applicant: Apple Inc.

Inventor： Amr Mostafa ,  Ammar Tahir ,  Bernd H. Kemmer ,  Karim Elbehaidy ,  Prasad P. Ashtekar

IPC: H04W76/19 ,  H04W36/08 ,  H04W36/16

CPC classification number: H04W76/19 ,  H04W36/08 ,  H04W36/16

Abstract: A user equipment (UE) is configured to receive a mobility configuration from a source cell of a network, wherein the mobility configuration includes at least one mobility measurement object, determine that a radio link failure (RLF) event has occurred on the source cell, searching for a primary cell (PCell) only on frequencies associated with the at least one mobility measurement object to reestablish a radio resource control (RRC) connection and reestablish the RRC connection with the PCell.

公开(公告)号：US20250063480A1

公开(公告)日：2025-02-20

申请号：US18785673

申请日：2024-07-26

Applicant: Apple Inc.

Inventor： Saikat Sengupta ,  Bernd H. Kemmer ,  Deepak Dash ,  Jayanth Nadigar ,  Parvez Sheikh

IPC: H04W48/16 ,  H04W84/04

Abstract: Disclosed are methods, systems, and computer-readable medium to perform operations including: receiving, by an access stratum (AS) layer of a user equipment (UE) and from a non-access stratum layer (NAS) layer of the UE, a Public Land Mobile Network (PLMN) search request; determining, by the AS layer, that a first connection instance is in radio resource control (RRC) connected mode; responsively determining, by the AS layer, whether a second connection instance is available; and in response to determining that the second connection instance is available, triggering, by the AS layer, the PLMN search on the second connection instance, wherein the PLMN search comprises one or more frequency scans.