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.

公开(公告)号：US10893564B2

公开(公告)日：2021-01-12

申请号：US15325398

申请日：2015-07-20

Applicant: APPLE INC.

Inventor： Shashanka Totadamane Ramappa ,  Parvez Sheikh

IPC: H04W76/19 ,  H04W76/10 ,  H04W36/00 ,  H04W88/06 ,  H04W84/04

Abstract: Briefly, in accordance with one or more embodiments, a method to implement an extended service request procedure for a circuit-switched fallback, comprises communicating with a packet-switched network, and initiating an extended service request procedure for a circuit-switched fallback to handle a voice call. If the voice call is terminated prior to completion of the extended service request procedure, the extended service request procedure may be aborted, and the user may remain in communication with the packet-switched network. Otherwise, the user completes the connection to the circuit-switched network and communicates with a circuit-switched network to handle the voice call.